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Precision Index Oscillator for Tradestation was conceptualized by Precision Trading systems in 2009  


Pi-osc  was created to provide trade timing signals by Precision Trading Systems in 2009, and is a consensus indicator which has some powerful improvements and differences to industry standard oscillators. At first glance to the untrained eye it would appear like another other oscillator, but when testing it side by side comparing system performance the true power of this excellent indicator begin to emerge.

This product is now available on the Tradestation app store at $16 per month

Click the box below to go to the appstore 

© Roger Medcalf 2005 - 2017 ... You may not reprint text or images without permission

Precision Index Oscillator for Tradestation and Multicharts shown below on recent data


PI-osc is extremely simple to use and trading signals come if + or - 3.14 is reached, the actual signal to buy or sell is when the oscillator moves back to away from PI. This signal indicates a 86% probability that the next bar will reverse.

It is comprised of 439 different mathematical equations which measure price and volume movement in multiple timeframe sampling that predict with a high degree of accuracy where turning points in trends are likely to occur. The designer Mr Medcalf is a successful trader with more than 12 years trading experience. His work on PI-osc began more than 10 years earlier when observing the limitations of conventional RSI, Stochastics, Williams %r etc. " Conventional oscillators just don't have enough intelligence to offer any real concrete evidence to put your hard earned money down" He stated. Although viewing other oscillators as having some uses, he also noted their shortcomings. The resulting observations of oscillators not coping with trending situations, whilst being excellent in ranging or cycling markets spawned the concept of designing the PI-osc.






How does the Precision Index Oscillator work?

The PI-osc indicator uses some very ingenious and logical factors in its calculations, some of these factors are found within conventional oscillators and some are not.

The components that go into computations are identified below.

Automatic-trend skew adjustment PI-osc completely eliminates the problems of conventional oscillators in trends.  Eg, in a rising trending market a typical oscillator with a 0 - 100 range, will track in the higher levels of its limits, perhaps between 40 and 90, which means there will be too many sell signals (overbought) and no buy signals.  PI-Osc automatically adjusts its output values depending on whether the markets are trending up, down or neutral. This feature alone is worthy of being a bolt on extra for other oscillators. (This feature is coming soon in version 2, please check homepage for updates)

Money flow index provides a simple snapshot of how sold out a stock or future really is and when measured in three different time frames gives a slick consensus view of money flow.

Relative strength index (RSI)  still the No1 most popular indicator in use today as its power to identify overbought and oversold qualities in sideways markets is exceptional. Its poor performance in trends is greatly reduced when seamlessly integrated with the PI-osc algorithm.

Demand index, being one of the designers favourite indicators for measuring the future direction caused by a large volume trade is incorporated here as well as its exceptional efficiency as a divergence indicator. James Sibbet's creation provides an additional stellar incisive cutting accuracy to the PI-osc.

Divergences. PI-osc measures divergences which occur in five different time frames from two different indicators, realising that divergences are often spurious in their reliability, the designer only factors 4% of the total indicator reading from these. Paradoxically the buy and sell zones have to have at least one observation of a divergence to trigger a signal.

Volume is always a factor that precedes a price change, as stock prices cannot move without a real money value being assigned to it either as a recent trade or a bid-offer order being placed. The designer's understanding of volume patterns is very useful addition incorporated into the PI-osc indicators unique conception. 

Please note you must have trade volume enabled when using with stocks and futures in Tradestation or Multicharts for PI-osc to function correctly.

For use with Forex you must use tick volume

Momentum frequently decelerates prior to market turning points and PI-osc is monitoring several timeframes of smoothed momentum samples in its calculations. But unlike a conventional rate of change or momentum indicator the PI-osc indicator scores a neutral reading when momentum is rising or falling fast, and a reading is only factored into the output when momentum is reducing, thus indicating a higher probability of success.

Probability is another feature of this algorithm. Although rarely used in industry standard oscillators, the designer has added a standard deviation (2.9) factor into this indicator as the more usual 2 standard deviations used in Bollinger bands is just not reliable enough to bet hard earned cash on. Normally distributed price sets have a 99.9% containment within 3.3 standard deviations, so when this is breached the PI-osc adds or deducts a further value to its output number.

Stochastics have similar attributes to RSI oscillators and have contributed a factor into PI-osc due to their smooth and reliable ability to identify buying and selling points on non trending markets.

Price patterns. Generally the industry standard oscillators just use the closing price to calculate their values, and although some indicators such as the stochastic use the high and low in their mathematics, few oscillators are actually programmed to respond to unique candlestick chart set ups. PI-osc is setting the standard with its intelligent programming to recognise when the current chart pattern is shouting Buy! Several of the more reliable patterns are factored into the algorithm. 

When all the maths is done, PI-osc does an exceptional job of determining true buying and selling points. Basically the trading interpretation is made very simple for you, as the buy and sell zones are so logically determined, not by one factor but from a large consensus "vote" from more than one different computation.

The benefits of this indicator are that it saves valuable time in "confirming technical analysis signals" and all trades know time is precious as large price changes can be missed in seconds while checking other confirming factors. It takes the hard work out of it, and lets your computer do the brain work. 

Ideally this indicator is best as an entry signal, and exits are best done with a trailing stop which has a logical trend following exit, its quite rare that the PI-osc will run right to the other extreme and issue a reverse signal, but it does sometimes.


Precision Index oscillator finds tops and bottoms with incredible accuracy


Rule 1   Wait for Pi



Rule 2   Wait for Pi



Rule 3    Remember the rules



Which markets can PI-OSC be used on?

  • Futures            
  • Stocks               
  • Bonds                
  • Forex            
  • Forex Futures   

Which markets cannot be used with PI-OSC ?

  • Indices without volume
  • Any market with no volume



Waiting for Pi-Osc to hit 3.14 is worth the wait, as rare signals are more profitable than common ones.



Trade signals are generated when Pi is achieved and then moves away from Pi



Trade signals are generated when Pi is achieved and then moves away from Pi



Just sit back and wait for your PI to come along and remember that in the stock market there is generally always a sucker ready to take the other side of your trade.




Precision Index Oscillator PI-OSC

Price $397  (Pay-Pal)   Buy this item

Stocks, Futures, Bonds, Forex, Real-time and Static data  


Author: Precision Trading Systems. (Protected EL code)


     PI-Osc works very hard to help your ability to pick a top or bottom compared to any other technical analysis tools


Buy Precision Index Oscillator for Tradestation and Multicharts now

 Protected ELA Code Indicator and function........$397

The function can be called to provide precision timing to your trade signals and strategies,

you will receive some sample code for use in construction signals with the instructions when you purchase.

             If you are sceptical about the high quality of this product then please sample my free items before you buy so you can assess

that they are reliable, stable and accurate in their execution.

Regards Roger

Full list of other paid and free products from Precision Trading Systems.



   PI-Osc shows 2 precise bottoms in this example below



   Request free indicators or ask a question

   To request a free indicator, drop me an email and I will send it off to you (usually within one hour)

List of other indicators and systems available from Precision Trading Systems below.




Compatible with....

Indicator + Strategy + Paintbar

PLA Dynamical GOLD

Features include 101 speeds per length, overshoot on-off feature, anti-reverse on- off feature to reduce over trading, adjustable anti-reverse fractal percentages, fast start algorithm, paint bar, strategy and function which can be called by your own bespoke studies .

Read more


Price $133 (Pay-Pal)  Buy this item


Stocks, Futures, Bonds, Forex, Indices etc

Author: Precision Trading Systems. (Protected EL code)

Compatible with....

  Indicator + function

Precision Probability Index

An oscillator that measures the exact mathematical probability of one moving average being greater than another. Immensely versatile in its applications this indicator will help you make informed decisions by giving you the exact odds of your trade working out to the inputted bars into the future that you choose. When varying the settings this indicator can be made to work as a DSP binary trend indicator, or perform in the similar way as the popular  market tracker indicator by Indexia research. Read more



Price $245 (Pay-Pal)  Buy this item

Stocks, Futures, Bonds, Forex, Indices etc

Author: Precision Trading Systems. (Protected EL code)

Compatible with....


Volume flow indicator (VFI)

Designed by Markos Katsanos this oscillator has many excellent qualities. Useful as a trend confirmation indicator, an overbought oversold oscillator, divergences between the price and the VFI are usually very reliable

VFI gets the vote of confidence from Precision trading systems as being a "must have" tool in the discerning traders kit

Please click below to see some more detailed examples of charts with the VFI plotted...More details and examples


FREE  with 1125 Trading IQ points (See bottom of page for details)

Stocks, Futures, Bonds, Forex (needs volume to run)


Author: Markos Katsanos. (Open EL code)

Compatible with....          Indicator + function

Demand Index

An excellent oscillator that is versatile in its applications, computing its values from price and volume. It can be used as a divergence indicator and a trend following indicator. I have added a smoothing length feature to suit the needs of the individual user.

I find this indicator very useful for observing intra-day price action in actively traded stocks and futures...........More details and examples

FREE  with 1200 Trading IQ points (See bottom of page for details)

Stocks, Futures, Bonds, Forex, Indices etc

Author: James Sibbet. ( Protected code )

Compatible with....    Indicator + function + signal

Precision Stop

Trend following system and indicator that self adjusts its distance to suit noise levels and volatility factors, making it more "intelligent" than Parabolic SAR, or ATR type indicators.

Can be adjusted to suit any time frame from day-trading to long term trend following by adjusting MULTI settings, features include a neat max and min percentage distance setting to cater for individual tastes.

Takes the guess work out of knowing when the trend is up or down, based on your own input values......*NEW*  Video simulation


Price $125 (Pay-Pal)   Buy this item

Stocks, Futures, Bonds, Forex, Indices etc


Author: Precision Trading Systems. (Protected EL code)

Compatible with....          Indicator + function                                     Insync Index

A "consensus" oscillator that highlights trend turning points, computing its values from an array of standard oscillators such as RSI Stochastic and Money Flow index.

It is best applied to range bound markets rather than trending ones.


I have added a REALVOLUME true-false feature  for users who use both tick volume and trade volume..........More details and examples


FREE  with 1150 Trading IQ points (See bottom of page for details)   

Stocks, Futures (Unsuitable for Forex)


Author: Norm North. ( Open EL code )

Compatible with....           Indicator + function                       Precision divergence finder

A complex piece of code that observes multiple look backs of Demand Index lengths to hunt out when divergences exist.

Often produces stunning signals at exact market bottoms.

This is not an "always in the market" indicator and only flags up when sets up occur that show a real divergence in a market.

As Demand Index uses volume, to perform at its best this indicator needs real volume enabled..............More details and examples


Price $167  (Pay-Pal)   Buy this item

Stocks, Futures, Bonds  (Unsuitable for Forex)


Author: Precision Trading Systems. (Protected EL code)

Compatible with....              Indicator + function                     Trade Volume Index  ( TVI )

Beautiful piece of work by Steve B Achelis, which I used in some of my early systems. Makes for a smooth analysis of volumes flowing in and out of markets and has always been one of my favourites.

I have altered the code to allow length changes and smoothing.


Adds the "Volume dimension" to your price analysis in a clear and precise manner. This indicator is a valuable addition to system filters to confirm trend direction...........More


FREE  with 1100 Trading IQ points (See bottom of page for details)

Stocks, Futures, Bonds, Forex, Indices etc


Author: Steve B Achelis. ( Protected EL code)

Compatible with....              Indicator + function                                    Q-Stick

A Simple and yet very efficient way of defining if a trend is in a bull or bear phase. Probably the best piece of work that Chande ever turned out, and yet seemingly forgotten by the whole world.

Setting lengths to 80 or more makes for a smooth analysis of trend, and the crossing of zero indicates trend direction.


See how early it signalled a bear move in the example when it crossed zero. Can be used as an short term oscillator with lengths less than 10 and often gives very early signals...More


FREE  with 1050 Trading IQ points (See bottom of page for details)

Stocks, Futures, Bonds, Forex, Indices etc


Author: Tushar Chande. ( Protected EL code)

Compatible with....                Indicator + function Precision Volume (Tick volume for real-time )

An indicator I made for measuring demand-supply imbalances.

This indicator will only work correctly if used on real time data with tick volume enabled.


Early warning indicator ( Requires confirmation )

An oscillator type indicator which measures demand and supply imbalances in an easily understood form


Above zero = Demand > Supply over sampling period


New indicator highs or lows over a chosen long length of (100 bars+) often foretell a strong move is coming..........More


FREE    with 1025 Trading IQ points (See bottom of page for details)

Stocks, Futures, non-traded Indices (Unsuitable for Forex)


Author: Precision Trading Systems. (Protected EL code)

Compatible with....           Indicator + function           Precision Index Oscillator ( Pi-Osc )


Highly sophisticated "consensus" indicator comprised of many different component signals. A real technicians tool that measures everything from divergences to probabilities to unique chart patterns in a single market indicator. 

Best results are given when analysing range bound and choppy markets rather than trending ones. Version 2 is not available yet.


Some of its components use real volume so for this to perform at its best this indicator needs real volume............More


Price $397  (Pay-Pal)   Buy this item

Stocks, Futures, Bonds  


Author: Precision Trading Systems. (Protected EL code)

Compatible with....

 Indicator + function + Signal

Precision Mach-Trend

Designed to reduce whipsaw trades in trending periods and help the user reduce costly F expenses.

Mach-Trend is superbly simple to use, and is suitable for all ranges of traders. Calculated using advanced mathematics, this indicator will reduce your F and improve your overall performance. Mach-Trend Platinum pro has fully available parameters enabling advanced optimisations for the sophisticated user.........more information.


Price $995  (Pay-Pal)   Buy this item (demo available $197)

Stocks, Futures, Bonds, Forex  


Author: Precision Trading Systems. (Protected EL code)


Compatible with....          Indicator + function                              Precision Gravity System



A complex piece of code that observes multiple phases of planetary orbits, to calculate extreme points of price sets. The relative gravity of the "sun" and "moon" are calculated using advanced physics mathematics.

The first system of its kind to be introduced to stock market trading systems, its is still under developments.........more



Coming soon


Stocks, Futures, Bonds  (Unsuitable for Forex)


Author: Precision Trading Systems. (Protected EL code)

Compatible with....           Indicator + function

  Money flow index MFI


Highly effective volume indicator showing money flowing in and out of securities. Works well as an over bought oversold oscillator and can be used for divergences as well. Ranging between 0 to 100 the MFI crossing above or below 50 can be used to identify a bullish or bearish condition of a trend changing even.....More details and examples


FREE  with 1075 Trading IQ points (See bottom of page for details)

Stocks, Futures, Bonds, Forex, Indices


Author: Unknown. (Open EL code)



FREE and paid Systems and Indicators for Tradestation MultiCharts, MetaTrader4  and NinjaTrader, detailed articles on trading systems, trend following, risk control analytics, optimization, optimal trade size formulas, online calculators, FREE to play Trading IQ Game with massive prizes from our two sponsors NinjaTrader and MultiCharts, tutorial videos, expert trader videos, no nonense content that does exactly as it is described...Time is running out... Credit availability is drying up....US National debt to be equal to 35% of the entire worlds GDP in 3 years....33% of all USA tax revenues will be required just to make the INTEREST PAYMENTS on the collosal national debt...... Eventually the US will have no option other than to print money or default on their debt repayments...... US Dollars will likely cease to be the reserve currency of the world........Stimulus is running out, the Federal reserve has fired all its bullets and the only options left are to print more money or to default on the debt payments.....The problem is infinitely worse than in 1929 due to the added problem of this huge government debt...... In 1929 the USA still had a positive trade surplus and a manufacturing based economy..... In 2011 the USA will have no such resources to fall back on........The two most likely scenarios are both likely to lead to disaster......Hyper-Inflation at 40%+ or Deflationary implosion....... Either of the two possibilities will lead to huge moves in the worlds financial markets........Trading of these massive moves could be the only way out..........Wise proffessional traders have already started building huge dollar short posistions in anticipation of the debacles to come.....Many people will suffer as a result of the irresponsible un-elected Federal reserve operatives..........Many more people will lose their homes......Millions of jobs will be lost......Those who are unprepared will become impoverished in ways that they could never imagine.....What is your strategy to trade these violent market trends?.........ARE YOU  READY?

Precision Trading Systems is partnered with MultiCharts and part of the NinjaTrader Ecosystem

  • Products are provided for both these platforms.
  • Our partners also sponsor the Trading IQ Game
  • Both these trading platforms are excellent


Precision Trading Systems is provider of the following



 Precision Trading Systems is partnered  with MultiCharts.


 Precision Trading Systems is part of the NinjaTrader ecosystem.


 Systems and Indicators for Tradestation, NinjaTrader and MultiCharts.


 Top quality paid & FREE trading systems and indicators for most platforms


 Members can receive some paid products completely FREE


 Roger Medcalf is a vendor on the Tradestation App store


 Roger Medcalf is a vendor of products of MetaTrader 4



  Free to play Trading IQ Game with generous PRIZES  from our sponsors.


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  • Futures, Forex and Stock trading contain substantial risk and are not for every investor.

  • An investor could potentially lose all or more of the initial investment.

  • Risk capital is money that can be lost without jeopardizing ones financial security or lifestyle.

  • Only risk capital should be used for trading

  • Only those with sufficient risk capital should consider trading.

  • Past performance is not necessarily indicative of future results.





Hypothetical performance results have many inherent limitations, some of which are described below. no representation is being made that any account will or is likely to achieve profits or losses similar to those shown; in fact, there are frequently sharp differences between hypothetical performance results and the actual results subsequently achieved by any particular trading program. One of the limitations of hypothetical performance results is that they are generally prepared with the benefit of hindsight. In addition, hypothetical trading does not involve financial risk, and no hypothetical trading record can completely account for the impact of financial risk of actual trading. for example, the ability to withstand losses or to adhere to a particular trading program in spite of trading losses are material points which can also adversely affect actual trading results. There are numerous other factors related to the markets in general or to the implementation of any specific trading program which cannot be fully accounted for in the preparation of hypothetical performance results and all which can adversely affect trading results.






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