# Commitment of Traders (COT) Indicator for ThinkorSwim

#### Jerald643

##### New member
If anyone is familiar with the famous trader Larry Williams you will know he uses the COT (Commitment of Traders) data. It’s free public data. I was wondering if anyone has tried to write a script for that COT indicator?

Does anyone know of COT data is available on Ameritrade's platform? If not, with thinkscript, can I use external data or write a provider/connector for external data?

Solution
You can try this for ThinkorSwim:

Code:
``````input n = 38;

def o = open;
def h = high;
def l = low;
def c = close;

# TrueHigh = Highest of High or Close[1]
def TrueHigh = Max(high, close[1]);
# TrueLow = Lowest of Low or Close[1]
def TrueLow = Min(low, close[1]);
def OI = if isNaN(open_interest)
then OI[1]
else open_interest;
def poiv = sum (OI * (close-close[1] / (Truehigh - Truelow)) + onBalanceVolume());
plot values = (lowest(poiv, n)/highest(poiv,n));
# End Code COT proxy``````
You can try this for ThinkorSwim:

Code:
``````input n = 38;

def o = open;
def h = high;
def l = low;
def c = close;

# TrueHigh = Highest of High or Close[1]
def TrueHigh = Max(high, close[1]);
# TrueLow = Lowest of Low or Close[1]
def TrueLow = Min(low, close[1]);
def OI = if isNaN(open_interest)
then OI[1]
else open_interest;
def poiv = sum (OI * (close-close[1] / (Truehigh - Truelow)) + onBalanceVolume());
plot values = (lowest(poiv, n)/highest(poiv,n));
# End Code COT proxy``````

Last edited by a moderator:

87k+ Posts
369 Online

## The Market Trading Game Changer

Join 2,500+ subscribers inside the useThinkScript VIP Membership Club
• Exclusive indicators
• Proven strategies & setups
• Private Discord community
• Exclusive members-only content
• 1 full year of unlimited support

What is useThinkScript?

useThinkScript is the #1 community of stock market investors using indicators and other tools to power their trading strategies. Traders of all skill levels use our forums to learn about scripting and indicators, help each other, and discover new ways to gain an edge in the markets.

How do I get started?

We get it. Our forum can be intimidating, if not overwhelming. With thousands of topics, tens of thousands of posts, our community has created an incredibly deep knowledge base for stock traders. No one can ever exhaust every resource provided on our site.

If you are new, or just looking for guidance, here are some helpful links to get you started.

What are the benefits of VIP Membership?