r/highfreqtrading
15k members
r/highfreqtrading is a subreddit with 15k members. The most common kinds of discussions are advice requests and solution requests, and the community frequently discusses hft, trading, data, crypto, and market making.
The r/highfreqtrading subreddit is a place for people of all backgrounds to join in informed discussion around high-frequency trading systems with an emphasis on sharing direct expertise and firsthand knowledge.
Popular Themes in r/highfreqtrading
#1
Advice Requests
: "Low-latency tuning guide"
18 posts
#2
Solution Requests
: "Where should I buy data for HFT"
11 posts
#3
Self-Promotion
: "I built an open-source high-frequency backtesting tool"
2 posts
Popular Topics in r/highfreqtrading
#1
Hft
: "Trader role at Hft"
78 posts
#2
Trading
: "FLOX. C++ framework to building Trading systems"
27 posts
#3
Data
: "Where should I buy Data for HFT"
15 posts
#4
Crypto
: "Building an event-driven execution engine for Crypto scalping....challenges I didn’t expect"
12 posts
#5
Market Making
: "The only Market Making paper i completely understood"
12 posts
#6
Market
: "Trying to build my own HFT. (8 years working as software engineer + Nuclear engineering background )"
10 posts
#7
Latency
: "Reducing cross-thread Latency when sending orders"
9 posts
#8
Fpga
: "Building an Fpga-Based HFT Platform at Home – Anyone Else Using Kintex or ZU+ Boards with SFP+?"
8 posts
#9
System
: "FLOX. C++ framework to building trading Systems"
8 posts
#10
C++
: "C++ interview tips"
6 posts
Flair Used in r/highfreqtrading
#1
Code
: "I built a C++20 Matching Engine that does 150M ops/sec on a single core (Open Source)"
22 posts
#2
Question
: "The reality of quant"
20 posts
#3
Crypto
: "Broke $13.9k profits via stat arb in a single day"
8 posts
#4
Career
: "2.5yrs as a dev in HFT, what's next?"
4 posts
#5
News
: "Free GitHub version of TradingView Premium actually works"
2 posts
#6
Paper
: "For HFT Firm: Questions on Model Building, Teams, Costs, and Challenges"
2 posts
#7
Video
: "Building an HFT chip (FPGA)"
1 post
#8
Hmm
: "Arbitrage - A fun definition"
1 post
#9
Announcement
: "Termination of AI Posters and Engagement"
1 post
#10
Criticism
: "How much of marketshare is dominated by FPGA's and ASIC's in Exchanges ?"
1 post
Member Growth in r/highfreqtrading
Yearly
+4k members(33.5%)
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Last updated: June 16, 2026