SERA · Sera Prognostics, Inc.

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$2.03 -0.02 (-0.98%) At close · Jul 28

Market Cap

$79.49M

39.16M

Options Chain

15-min delayed Underlying $2.03 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 6 contracts

Put / call OI

0.25

Call-heavy positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$2.50

$0.47 above spot

ATM implied vol

228.6%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Nov 20 114d Jan 15 170d Feb 19 205d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
Underlying $2.03
4	4	322.1%	0.579	$0.20		$0.41	-0.63	135.2%	1	1
Call · $2.5 Last $0.20 Breakeven $2.70 Implied vol 322.1% Delta 0.579 ≈58% ITM Gamma 0.228 Theta -0.015 Vega 0.002 Open interest 4 Model this call Put · $2.5 In the money Last $0.41 Breakeven $2.09 Implied vol 135.2% Delta -0.63 ≈63% ITM Gamma 0.531 Theta -0.006 Vega 0.002 Open interest 1 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.902	304.2%	—	0
Call · $7.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $7.5 In the money Last — Breakeven — Implied vol 304.2% Delta -0.902 ≈90% ITM Gamma 0.111 Theta -0.006 Vega 0.001 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1534969 CUSIP 81749D107 13F (30d) 6 filings 6 filers Visit website Investor relations