firmtape

firmtape

Building firmtape.com - SPX dealer gamma
#101495010 followers0 following
#17,545Last month
0 KP
>10,000All time
0 KP

About

firmtape.com rebuilds SPX dealer positioning from the 0DTE options tape as it prints — net gamma by strike, the zero-gamma flip, call and put walls, the hold band, and the session's net-gamma percentile against the full archive. Every finished session is free to replay with no account, more than a thousand of them, so the levels can be checked against history before anyone pays for the live stream. No signals, deliberately: directional edges were backtested across the whole archive three ways and none survived out of sample. The terminal publishes measurements, not trade calls.

Badges

Tastemaker
Tastemaker
Gone streaking
Gone streaking

Maker History

  • FillStub
    FillStubOptions trading journal with tax worksheets and intervals
    Sep 2026
  • FirmTape
    FirmTapeSPX dealer gamma, rebuilt every second from the tape
    Aug 2026
    • 🎉
    Joined Product HuntAugust 18th, 2026

Forums

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28d ago

FillStub - Options trading journal with tax worksheets and intervals

Rebuilds the true lifecycle of every option contract from your broker export: rolls, assignments into share lots, cash-settled index options. Section 1256 against Form 8949, and a confidence interval on every statistic.
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2mo ago

gex.live - SPX dealer gamma, rebuilt every second from the tape

Rebuilds the SPX dealer options book from the live tape: zero-gamma flip, call and put walls, hold band, and DEX/VEX/vanna/charm per strike. Positions are signed from trades, not the call/put convention. Volume, open interest and measured flow sit side by side, so you can see where they disagree. 1,000+ finished sessions are free forever, no account. A backtesting Lab and an MCP server come with it. No buy/sell signals.
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