r/algotrading is a subreddit with 1.9M members. The most common kinds of discussions are pain & anger, and the community frequently discusses trading, backtesting, api, algo, and brokerage, and they frequently recommend/review trading book and stock screener.
A place for redditors to discuss quantitative trading, statistical methods, econometrics, programming, implementation, automated strategies, and bounce ideas off each other for constructive criticism. Feel free to submit papers/links of things you find interesting.
Popular Themes in r/algotrading
#1
Pain & Anger
: "What's the worst operational (not strategy) failure you've had running algos?"
1 post
Popular Topics in r/algotrading
#1
Trading
8 posts
#2
Backtesting
4 posts
#3
Api
4 posts
#4
Algo
4 posts
#5
Brokerage
3 posts
#6
Algorithmic Trading
3 posts
#7
Looking For A Data Source
2 posts
#8
Looking For A Programmer
2 posts
#9
Looking For A Mentor
2 posts
#10
Looking For A Good Api
2 posts
Products Discussed in r/algotrading
Trading Book
12 reviews
#1
Rob Carver
3.0★ from 2 reviews
#2
Ernie Chan
1.0★ from 1 review
#3
Sinclair
4.0★ from 1 review
Stock Screener
2 reviews
#1
TradingView
5.0★ from 1 review
#2
Finbox
4.0★ from 1 review
Flair Used in r/algotrading
#1
Strategy
: "I made a bot that spots "risk-free" arbitrage between Kalshi and Polymarket. Here's the code."
20 posts
#2
Data
: "Free or near-free market data APIs — what are you using?"
14 posts
#3
Other/Meta
: "Do you build your own dashboards / panels?"
9 posts
#4
Infrastructure
: "Tell me if this is realistic"
6 posts
#5
Education
: "Breakeven yes o not?"
4 posts
#6
Business
: "What was your worst day algo trading like?"
4 posts
#7
Research Papers
: "Starting tomorrow with $5,000. Time to see if the backtest holds up live."
1 post
#8
News
: "Mantic just raised $25M seed after beating every human forecaster in the latest Metaculus Cup. (ex Google Deepmind Founder)"
1 post
Member Growth in r/algotrading
Yearly
+85k members(4.7%)
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About
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Last updated: October 1, 2026