GERN · Geron Corp

Track GERN — free

$1.47 -0.07 (-4.23%) At close · Aug 14

Market Cap

$944.44M

642.47M

Options Chain

Underlying $1.47 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 5 days to expiry · 14 contracts · mixed snapshot sessions · Jun 18, 2026–Aug 14, 2026; 6 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

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dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 5d Sep 18 33d Dec 18 124d Jan 15 152d Mar 19 215d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	886.4%	0.939	—		$0.03	—	—	2	2
Call · $0.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 886.4% Delta 0.939 ≈94% ITM Gamma 0.078 Theta -0.018 Vega 0 Open interest 0 Model this call Put · $0.5 Snapshot session Aug 6, 2026 Last $0.03 Breakeven $0.47 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this put
20	2	508.6%	0.824	$0.67		$0.04	-0.191	689.4%	1	8
Call · $1 In the money Snapshot session Aug 12, 2026 Last $0.67 Breakeven $1.67 Implied vol 508.6% Delta 0.824 ≈82% ITM Gamma 0.295 Theta -0.022 Vega 0 Open interest 20 Model this call Put · $1 Snapshot session Aug 13, 2026 Last $0.04 Breakeven $0.96 Implied vol 689.4% Delta -0.191 ≈19% ITM Gamma 0.229 Theta -0.032 Vega 0 Open interest 8 Model this put
Underlying $1.47
2k	6	169.4%	0.486	$0.06		$0.09	-0.607	74.4%	5	424
Call · $1.5 Snapshot session Aug 14, 2026 Last $0.06 Breakeven $1.56 Implied vol 169.4% Delta 0.486 ≈49% ITM Gamma 1.372 Theta -0.012 Vega 0.001 Open interest 2k Model this call Put · $1.5 In the money Snapshot session Aug 14, 2026 Last $0.09 Breakeven $1.41 Implied vol 74.4% Delta -0.607 ≈61% ITM Gamma 3.042 Theta -0.005 Vega 0.001 Open interest 424 Model this put
529	20	322.7%	0.263	$0.04		—	—	—	—	0
Call · $2 Snapshot session Aug 10, 2026 Last $0.04 Breakeven $2.04 Implied vol 322.7% Delta 0.263 ≈26% ITM Gamma 0.589 Theta -0.018 Vega 0.001 Open interest 529 Model this call Put · $2 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$0.10		—	—	—	—	0
Call · $3 Snapshot session Jun 18, 2026 Last $0.10 Breakeven $3.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $3 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.963	422.8%	—	0
Call · $4 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $4 In the money Snapshot session Unknown Last — Breakeven — Implied vol 422.8% Delta -0.963 ≈96% ITM Gamma 0.112 Theta -0.005 Vega 0 Open interest 0 Model this put
1	1	—	—	$0.20		—	—	—	—	0
Call · $5 Snapshot session Jul 23, 2026 Last $0.20 Breakeven $5.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $5 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jun 18, 2026–Aug 14, 2026; 6 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. 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.

Key facts CIK 886744 CUSIP 374163103 13F (30d) 250 filings 247 filers Visit website Investor relations