ERAS · Erasca, Inc.

Track ERAS — free

$18.38 +0.52 (+2.91%) At close · Aug 14

Market Cap

$6.43B

349.76M

Options Chain

Underlying $18.38 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 4 days to expiry · 24 contracts · mixed snapshot sessions · Jul 8, 2026–Aug 14, 2026; 5 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

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 4d Sep 18 32d Oct 16 60d Dec 18 123d Jan 15 151d Mar 19 214d Apr 16 242d Jun 17 304d Dec 17 487d Jan 21 522d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.03	—	—	5	5
Call · $2.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $2.5 Snapshot session Jul 17, 2026 Last $0.03 Breakeven $2.47 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this put
1	1	—	—	$13.80		—	—	—	—	0
Call · $5 In the money Snapshot session Jul 8, 2026 Last $13.80 Breakeven $18.80 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	1	—	—	$11.95		$0.05	—	—	2	24
Call · $7.5 In the money Snapshot session Jul 24, 2026 Last $11.95 Breakeven $19.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $7.5 Snapshot session Aug 13, 2026 Last $0.05 Breakeven $7.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 24 Model this put
2	1	—	—	$8.30		$0.07	-0.104	558%	2	330
Call · $10 In the money Snapshot session Aug 10, 2026 Last $8.30 Breakeven $18.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this call Put · $10 Snapshot session Aug 10, 2026 Last $0.07 Breakeven $9.93 Implied vol 558% Delta -0.104 ≈10% ITM Gamma 0.015 Theta -0.22 Vega 0.004 Open interest 330 Model this put
0	5	—	—	$6.05		$0.13	-0.055	228%	3	257
Call · $12.5 In the money Snapshot session Jul 28, 2026 Last $6.05 Breakeven $18.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $12.5 Snapshot session Aug 11, 2026 Last $0.13 Breakeven $12.37 Implied vol 228% Delta -0.055 ≈5% ITM Gamma 0.024 Theta -0.056 Vega 0.003 Open interest 257 Model this put
154	7	—	—	$3.50		$0.30	-0.107	149.4%	1	1.3k
Call · $15 In the money Snapshot session Aug 13, 2026 Last $3.50 Breakeven $18.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 154 Model this call Put · $15 Snapshot session Aug 14, 2026 Last $0.30 Breakeven $14.70 Implied vol 149.4% Delta -0.107 ≈11% ITM Gamma 0.06 Theta -0.061 Vega 0.003 Open interest 1.3k Model this put
100	1	127.1%	0.644	$1.07		$0.80	-0.343	110.9%	2	1.6k
Call · $17.5 In the money Snapshot session Aug 14, 2026 Last $1.07 Breakeven $18.57 Implied vol 127.1% Delta 0.644 ≈64% ITM Gamma 0.141 Theta -0.105 Vega 0.008 Open interest 100 Model this call Put · $17.5 Snapshot session Aug 14, 2026 Last $0.80 Breakeven $16.70 Implied vol 110.9% Delta -0.343 ≈34% ITM Gamma 0.161 Theta -0.09 Vega 0.008 Open interest 1.6k Model this put
Underlying $18.38
1.8k	1	105.1%	0.243	$0.45		$2.00	-0.683	141.2%	2	70
Call · $20 Snapshot session Aug 14, 2026 Last $0.45 Breakeven $20.45 Implied vol 105.1% Delta 0.243 ≈24% ITM Gamma 0.144 Theta -0.073 Vega 0.006 Open interest 1.8k Model this call Put · $20 In the money Snapshot session Aug 12, 2026 Last $2.00 Breakeven $18.00 Implied vol 141.2% Delta -0.683 ≈68% ITM Gamma 0.121 Theta -0.109 Vega 0.008 Open interest 70 Model this put
383	3	133.1%	0.099	$0.15		$4.80	-0.785	199.7%	3	3
Call · $22.5 Snapshot session Aug 14, 2026 Last $0.15 Breakeven $22.65 Implied vol 133.1% Delta 0.099 ≈10% ITM Gamma 0.062 Theta -0.051 Vega 0.004 Open interest 383 Model this call Put · $22.5 In the money Snapshot session Jul 17, 2026 Last $4.80 Breakeven $17.70 Implied vol 199.7% Delta -0.785 ≈79% ITM Gamma 0.07 Theta -0.126 Vega 0.006 Open interest 3 Model this put
847	1	251.7%	0.17	$0.16		—	-0.857	228.6%	—	0
Call · $25 Snapshot session Aug 13, 2026 Last $0.16 Breakeven $25.16 Implied vol 251.7% Delta 0.17 ≈17% ITM Gamma 0.049 Theta -0.141 Vega 0.006 Open interest 847 Model this call Put · $25 In the money Snapshot session Unknown Last — Breakeven — Implied vol 228.6% Delta -0.857 ≈86% ITM Gamma 0.047 Theta -0.111 Vega 0.004 Open interest 0 Model this put
3	2	319.1%	0.121	$0.06		—	-0.818	387.9%	—	0
Call · $30 Snapshot session Aug 10, 2026 Last $0.06 Breakeven $30.06 Implied vol 319.1% Delta 0.121 ≈12% ITM Gamma 0.03 Theta -0.14 Vega 0.005 Open interest 3 Model this call Put · $30 In the money Snapshot session Unknown Last — Breakeven — Implied vol 387.9% Delta -0.818 ≈82% ITM Gamma 0.033 Theta -0.225 Vega 0.005 Open interest 0 Model this put
2	2	—	—	$0.07		—	-0.854	434.6%	—	0
Call · $35 Snapshot session Aug 10, 2026 Last $0.07 Breakeven $35.07 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 Model this call Put · $35 In the money Snapshot session Unknown Last — Breakeven — Implied vol 434.6% Delta -0.854 ≈85% ITM Gamma 0.025 Theta -0.214 Vega 0.005 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 · Jul 8, 2026–Aug 14, 2026; 5 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 1761918 CUSIP 29479A108 13F (30d) 248 filings 247 filers Visit website Investor relations