RMBS · Rambus Inc

Track RMBS — free

$100.82 +1.49 (+1.50%) At close · Aug 14

Market Cap

$10.92B

108.14M

Options Chain

Underlying $100.82 · today Options Calculator

Positioning

Aug 21, 2026 · 6 days to expiry · 80 contracts · mixed snapshot sessions · Apr 28, 2026–Aug 14, 2026; 2 unknown

Put / call OI

—

dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

—

dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 6d Sep 18 34d Nov 20 97d Jan 15 153d Feb 19 188d Jan 21 524d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
80	50	—	—	$84.17		$0.03	-0.009	255.7%	1	348
Call · $47.5 In the money Snapshot session May 14, 2026 Last $84.17 Breakeven $131.67 Implied vol — Delta — Gamma — Theta — Vega — Open interest 80 Model this call Put · $47.5 Snapshot session Aug 12, 2026 Last $0.03 Breakeven $47.47 Implied vol 255.7% Delta -0.009 ≈1% ITM Gamma 0.001 Theta -0.064 Vega 0.005 Open interest 348 Model this put
6	3	—	—	$51.08		$0.02	-0.02	280.1%	30	198
Call · $50 In the money Snapshot session Aug 4, 2026 Last $51.08 Breakeven $101.08 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this call Put · $50 Snapshot session Aug 13, 2026 Last $0.02 Breakeven $49.98 Implied vol 280.1% Delta -0.02 ≈2% ITM Gamma 0.001 Theta -0.137 Vega 0.01 Open interest 198 Model this put
10	3	—	—	$46.13		$0.03	-0.011	209.1%	6	315
Call · $55 In the money Snapshot session Aug 4, 2026 Last $46.13 Breakeven $101.13 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 Model this call Put · $55 Snapshot session Aug 12, 2026 Last $0.03 Breakeven $54.97 Implied vol 209.1% Delta -0.011 ≈1% ITM Gamma 0.001 Theta -0.061 Vega 0.005 Open interest 315 Model this put
3	1	—	—	$41.21		$0.07	-0.011	176.8%	2	420
Call · $60 In the money Snapshot session Aug 13, 2026 Last $41.21 Breakeven $101.21 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $60 Snapshot session Aug 13, 2026 Last $0.07 Breakeven $59.93 Implied vol 176.8% Delta -0.011 ≈1% ITM Gamma 0.001 Theta -0.051 Vega 0.005 Open interest 420 Model this put
11	1	—	—	$36.25		$0.05	-0.017	160.6%	18	600
Call · $65 In the money Snapshot session Aug 13, 2026 Last $36.25 Breakeven $101.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 11 Model this call Put · $65 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $64.95 Implied vol 160.6% Delta -0.017 ≈2% ITM Gamma 0.002 Theta -0.068 Vega 0.006 Open interest 600 Model this put
38	5	—	—	$24.00		$0.05	-0.067	195.7%	6	349
Call · $70 In the money Snapshot session Aug 3, 2026 Last $24.00 Breakeven $94.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 38 Model this call Put · $70 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $69.95 Implied vol 195.7% Delta -0.067 ≈7% ITM Gamma 0.005 Theta -0.255 Vega 0.02 Open interest 349 Model this put
43	16	—	—	$22.20		$0.05	-0.014	102.7%	1	775
Call · $75 In the money Snapshot session Jul 27, 2026 Last $22.20 Breakeven $97.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest 43 Model this call Put · $75 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $74.95 Implied vol 102.7% Delta -0.014 ≈1% ITM Gamma 0.002 Theta -0.036 Vega 0.006 Open interest 775 Model this put
41	3	—	—	$20.83		$0.06	-0.035	97.5%	24	1.6k
Call · $80 In the money Snapshot session Aug 13, 2026 Last $20.83 Breakeven $100.83 Implied vol — Delta — Gamma — Theta — Vega — Open interest 41 Model this call Put · $80 Snapshot session Aug 14, 2026 Last $0.06 Breakeven $79.94 Implied vol 97.5% Delta -0.035 ≈3% ITM Gamma 0.006 Theta -0.075 Vega 0.012 Open interest 1.6k Model this put
33	10	—	—	$18.00		$0.13	-0.035	84.4%	2	171
Call · $82.5 In the money Snapshot session Aug 5, 2026 Last $18.00 Breakeven $100.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 33 Model this call Put · $82.5 Snapshot session Aug 13, 2026 Last $0.13 Breakeven $82.37 Implied vol 84.4% Delta -0.035 ≈4% ITM Gamma 0.007 Theta -0.066 Vega 0.013 Open interest 171 Model this put
173	1	—	—	$17.60		$0.20	-0.04	73.7%	188	1.2k
Call · $85 In the money Snapshot session Aug 12, 2026 Last $17.60 Breakeven $102.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 173 Model this call Put · $85 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $84.80 Implied vol 73.7% Delta -0.04 ≈4% ITM Gamma 0.008 Theta -0.063 Vega 0.013 Open interest 1.2k Model this put
321	1	59.9%	0.963	$17.23		$0.35	-0.076	75.3%	17	154
Call · $87.5 In the money Snapshot session Aug 5, 2026 Last $17.23 Breakeven $104.73 Implied vol 59.9% Delta 0.963 ≈96% ITM Gamma 0.01 Theta -0.057 Vega 0.013 Open interest 321 Model this call Put · $87.5 Snapshot session Aug 14, 2026 Last $0.35 Breakeven $87.15 Implied vol 75.3% Delta -0.076 ≈8% ITM Gamma 0.014 Theta -0.108 Vega 0.023 Open interest 154 Model this put
210	1	—	—	$10.71		$0.55	-0.11	71.1%	15	1k
Call · $90 In the money Snapshot session Aug 14, 2026 Last $10.71 Breakeven $100.71 Implied vol — Delta — Gamma — Theta — Vega — Open interest 210 Model this call Put · $90 Snapshot session Aug 14, 2026 Last $0.55 Breakeven $89.45 Implied vol 71.1% Delta -0.11 ≈11% ITM Gamma 0.019 Theta -0.135 Vega 0.023 Open interest 1k Model this put
64	20	54.2%	0.887	$8.50		$1.05	-0.165	68.1%	24	287
Call · $92.5 In the money Snapshot session Aug 14, 2026 Last $8.50 Breakeven $101.00 Implied vol 54.2% Delta 0.887 ≈89% ITM Gamma 0.026 Theta -0.114 Vega 0.023 Open interest 64 Model this call Put · $92.5 Snapshot session Aug 14, 2026 Last $1.05 Breakeven $91.45 Implied vol 68.1% Delta -0.165 ≈17% ITM Gamma 0.027 Theta -0.169 Vega 0.035 Open interest 287 Model this put
121	4	58.8%	0.787	$6.40		$1.40	-0.25	69.7%	12	1.2k
Call · $95 In the money Snapshot session Aug 13, 2026 Last $6.40 Breakeven $101.40 Implied vol 58.8% Delta 0.787 ≈79% ITM Gamma 0.037 Theta -0.183 Vega 0.035 Open interest 121 Model this call Put · $95 Snapshot session Aug 14, 2026 Last $1.40 Breakeven $93.60 Implied vol 69.7% Delta -0.25 ≈25% ITM Gamma 0.033 Theta -0.222 Vega 0.046 Open interest 1.2k Model this put
129	3	49.1%	0.705	$4.89		$2.82	-0.343	70.4%	3	144
Call · $97.5 In the money Snapshot session Aug 14, 2026 Last $4.89 Breakeven $102.39 Implied vol 49.1% Delta 0.705 ≈70% ITM Gamma 0.051 Theta -0.179 Vega 0.047 Open interest 129 Model this call Put · $97.5 Snapshot session Aug 14, 2026 Last $2.82 Breakeven $94.68 Implied vol 70.4% Delta -0.343 ≈34% ITM Gamma 0.039 Theta -0.263 Vega 0.054 Open interest 144 Model this put
799	35	54.6%	0.561	$3.90		$3.80	-0.444	65.6%	5	5.6k
Call · $100 In the money Snapshot session Aug 14, 2026 Last $3.90 Breakeven $103.90 Implied vol 54.6% Delta 0.561 ≈56% ITM Gamma 0.053 Theta -0.224 Vega 0.054 Open interest 799 Model this call Put · $100 Snapshot session Aug 14, 2026 Last $3.80 Breakeven $96.20 Implied vol 65.6% Delta -0.444 ≈44% ITM Gamma 0.044 Theta -0.26 Vega 0.054 Open interest 5.6k Model this put
Underlying $100.82
828	11	67.1%	0.348	$1.70		$7.00	-0.65	68%	2	243
Call · $105 Snapshot session Aug 14, 2026 Last $1.70 Breakeven $106.70 Implied vol 67.1% Delta 0.348 ≈35% ITM Gamma 0.04 Theta -0.256 Vega 0.049 Open interest 828 Model this call Put · $105 In the money Snapshot session Aug 14, 2026 Last $7.00 Breakeven $98.00 Implied vol 68% Delta -0.65 ≈65% ITM Gamma 0.04 Theta -0.251 Vega 0.049 Open interest 243 Model this put
1.4k	22	62.1%	0.164	$0.70		$10.70	-0.796	72.4%	2	238
Call · $110 Snapshot session Aug 14, 2026 Last $0.70 Breakeven $110.70 Implied vol 62.1% Delta 0.164 ≈16% ITM Gamma 0.029 Theta -0.157 Vega 0.039 Open interest 1.4k Model this call Put · $110 In the money Snapshot session Aug 14, 2026 Last $10.70 Breakeven $99.30 Implied vol 72.4% Delta -0.796 ≈80% ITM Gamma 0.029 Theta -0.201 Vega 0.038 Open interest 238 Model this put
204	22	65.8%	0.076	$0.30		$15.58	-0.895	74%	1	270
Call · $115 Snapshot session Aug 14, 2026 Last $0.30 Breakeven $115.30 Implied vol 65.8% Delta 0.076 ≈8% ITM Gamma 0.016 Theta -0.097 Vega 0.026 Open interest 204 Model this call Put · $115 In the money Snapshot session Aug 14, 2026 Last $15.58 Breakeven $99.42 Implied vol 74% Delta -0.895 ≈89% ITM Gamma 0.018 Theta -0.129 Vega 0.026 Open interest 270 Model this put
819	48	70.9%	0.039	$0.10		$21.74	-0.894	97%	1	221
Call · $120 Snapshot session Aug 14, 2026 Last $0.10 Breakeven $120.10 Implied vol 70.9% Delta 0.039 ≈4% ITM Gamma 0.009 Theta -0.061 Vega 0.016 Open interest 819 Model this call Put · $120 In the money Snapshot session Aug 10, 2026 Last $21.74 Breakeven $98.26 Implied vol 97% Delta -0.894 ≈89% ITM Gamma 0.014 Theta -0.171 Vega 0.027 Open interest 221 Model this put
3.9k	3	78.1%	0.025	$0.06		$23.00	-0.916	109.7%	1	175
Call · $125 Snapshot session Aug 14, 2026 Last $0.06 Breakeven $125.06 Implied vol 78.1% Delta 0.025 ≈2% ITM Gamma 0.005 Theta -0.046 Vega 0.008 Open interest 3.9k Model this call Put · $125 In the money Snapshot session Aug 12, 2026 Last $23.00 Breakeven $102.00 Implied vol 109.7% Delta -0.916 ≈92% ITM Gamma 0.01 Theta -0.164 Vega 0.027 Open interest 175 Model this put
509	314	101.8%	0.037	$0.10		$29.50	-0.934	118.4%	1	376
Call · $130 Snapshot session Aug 14, 2026 Last $0.10 Breakeven $130.10 Implied vol 101.8% Delta 0.037 ≈4% ITM Gamma 0.006 Theta -0.084 Vega 0.016 Open interest 509 Model this call Put · $130 In the money Snapshot session Aug 12, 2026 Last $29.50 Breakeven $100.50 Implied vol 118.4% Delta -0.934 ≈93% ITM Gamma 0.008 Theta -0.146 Vega 0.016 Open interest 376 Model this put
368	11	98.1%	0.016	$0.05		$42.40	-0.949	125.1%	3	3
Call · $135 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $135.05 Implied vol 98.1% Delta 0.016 ≈2% ITM Gamma 0.003 Theta -0.039 Vega 0.008 Open interest 368 Model this call Put · $135 In the money Snapshot session Jul 27, 2026 Last $42.40 Breakeven $92.60 Implied vol 125.1% Delta -0.949 ≈95% ITM Gamma 0.006 Theta -0.123 Vega 0.016 Open interest 3 Model this put
305	3	112%	0.018	$0.18		$47.00	-0.948	140.6%	3	8
Call · $140 Snapshot session Aug 14, 2026 Last $0.18 Breakeven $140.18 Implied vol 112% Delta 0.018 ≈2% ITM Gamma 0.003 Theta -0.05 Vega 0.008 Open interest 305 Model this call Put · $140 In the money Snapshot session Jul 27, 2026 Last $47.00 Breakeven $93.00 Implied vol 140.6% Delta -0.948 ≈95% ITM Gamma 0.006 Theta -0.142 Vega 0.016 Open interest 8 Model this put
381	6	143.1%	0.037	$0.48		$26.20	-0.947	155.7%	23	0
Call · $145 Snapshot session Aug 10, 2026 Last $0.48 Breakeven $145.48 Implied vol 143.1% Delta 0.037 ≈4% ITM Gamma 0.004 Theta -0.118 Vega 0.008 Open interest 381 Model this call Put · $145 In the money Snapshot session Jun 11, 2026 Last $26.20 Breakeven $118.80 Implied vol 155.7% Delta -0.947 ≈95% ITM Gamma 0.005 Theta -0.161 Vega 0.017 Open interest 0 Model this put
5.3k	1	135.6%	0.019	$0.05		$30.20	-0.954	164.3%	8	0
Call · $150 Snapshot session Aug 13, 2026 Last $0.05 Breakeven $150.05 Implied vol 135.6% Delta 0.019 ≈2% ITM Gamma 0.002 Theta -0.063 Vega 0.009 Open interest 5.3k Model this call Put · $150 In the money Snapshot session Jun 17, 2026 Last $30.20 Breakeven $119.80 Implied vol 164.3% Delta -0.954 ≈95% ITM Gamma 0.004 Theta -0.151 Vega 0.017 Open interest 0 Model this put
685	3	135.2%	0.012	$0.10		$39.60	-0.948	181.4%	5	0
Call · $155 Snapshot session Aug 6, 2026 Last $0.10 Breakeven $155.10 Implied vol 135.2% Delta 0.012 ≈1% ITM Gamma 0.002 Theta -0.042 Vega 0.004 Open interest 685 Model this call Put · $155 In the money Snapshot session Jul 1, 2026 Last $39.60 Breakeven $115.40 Implied vol 181.4% Delta -0.948 ≈95% ITM Gamma 0.004 Theta -0.184 Vega 0.017 Open interest 0 Model this put
532	17	197.7%	0.058	$0.05		$48.50	-0.947	195%	6	0
Call · $160 Snapshot session Aug 10, 2026 Last $0.05 Breakeven $160.05 Implied vol 197.7% Delta 0.058 ≈6% ITM Gamma 0.004 Theta -0.23 Vega 0.018 Open interest 532 Model this call Put · $160 In the money Snapshot session Jun 26, 2026 Last $48.50 Breakeven $111.50 Implied vol 195% Delta -0.947 ≈95% ITM Gamma 0.004 Theta -0.203 Vega 0.017 Open interest 0 Model this put
141	1	194.5%	0.04	$0.10		$28.60	-0.96	196.8%	7	0
Call · $165 Snapshot session Aug 7, 2026 Last $0.10 Breakeven $165.10 Implied vol 194.5% Delta 0.04 ≈4% ITM Gamma 0.003 Theta -0.171 Vega 0.009 Open interest 141 Model this call Put · $165 In the money Snapshot session Jun 4, 2026 Last $28.60 Breakeven $136.40 Implied vol 196.8% Delta -0.96 ≈96% ITM Gamma 0.003 Theta -0.165 Vega 0.016 Open interest 0 Model this put
377	1	197.5%	0.035	$0.60		$48.99	-0.965	200%	1	0
Call · $170 Snapshot session Jul 27, 2026 Last $0.60 Breakeven $170.60 Implied vol 197.5% Delta 0.035 ≈3% ITM Gamma 0.003 Theta -0.154 Vega 0.009 Open interest 377 Model this call Put · $170 In the money Snapshot session Jun 30, 2026 Last $48.99 Breakeven $121.01 Implied vol 200% Delta -0.965 ≈96% ITM Gamma 0.003 Theta -0.148 Vega 0.009 Open interest 0 Model this put
216	2	219.4%	0.042	$0.22		$38.40	-0.959	219.5%	1	0
Call · $175 Snapshot session Jul 29, 2026 Last $0.22 Breakeven $175.22 Implied vol 219.4% Delta 0.042 ≈4% ITM Gamma 0.003 Theta -0.202 Vega 0.009 Open interest 216 Model this call Put · $175 In the money Snapshot session Jun 5, 2026 Last $38.40 Breakeven $136.60 Implied vol 219.5% Delta -0.959 ≈96% ITM Gamma 0.003 Theta -0.187 Vega 0.009 Open interest 0 Model this put
439	3	236%	0.049	$0.01		$76.30	-0.936	251.4%	5	0
Call · $180 Snapshot session Aug 4, 2026 Last $0.01 Breakeven $180.01 Implied vol 236% Delta 0.049 ≈5% ITM Gamma 0.003 Theta -0.242 Vega 0.019 Open interest 439 Model this call Put · $180 In the money Snapshot session Apr 28, 2026 Last $76.30 Breakeven $103.70 Implied vol 251.4% Delta -0.936 ≈94% ITM Gamma 0.004 Theta -0.305 Vega 0.018 Open interest 0 Model this put
426	1	277%	0.079	$0.05		$54.70	-0.968	224.7%	1	0
Call · $185 Snapshot session Jul 29, 2026 Last $0.05 Breakeven $185.05 Implied vol 277% Delta 0.079 ≈8% ITM Gamma 0.004 Theta -0.41 Vega 0.019 Open interest 426 Model this call Put · $185 In the money Snapshot session Jun 11, 2026 Last $54.70 Breakeven $130.30 Implied vol 224.7% Delta -0.968 ≈97% ITM Gamma 0.002 Theta -0.153 Vega 0.009 Open interest 0 Model this put
218	150	286.9%	0.078	$0.05		$102.10	-0.965	237.8%	1	0
Call · $190 Snapshot session Aug 11, 2026 Last $0.05 Breakeven $190.05 Implied vol 286.9% Delta 0.078 ≈8% ITM Gamma 0.004 Theta -0.422 Vega 0.019 Open interest 218 Model this call Put · $190 In the money Snapshot session Jul 28, 2026 Last $102.10 Breakeven $87.90 Implied vol 237.8% Delta -0.965 ≈97% ITM Gamma 0.002 Theta -0.174 Vega 0.009 Open interest 0 Model this put
184	2	294%	0.075	$0.80		—	-0.966	245.3%	—	0
Call · $195 Snapshot session Jul 28, 2026 Last $0.80 Breakeven $195.80 Implied vol 294% Delta 0.075 ≈8% ITM Gamma 0.003 Theta -0.419 Vega 0.019 Open interest 184 Model this call Put · $195 In the money Snapshot session Unknown Last — Breakeven — Implied vol 245.3% Delta -0.966 ≈97% ITM Gamma 0.002 Theta -0.175 Vega 0.009 Open interest 0 Model this put
265	30	213.1%	0.013	$0.05		$49.49	-0.97	247.4%	2	0
Call · $200 Snapshot session Jul 29, 2026 Last $0.05 Breakeven $200.05 Implied vol 213.1% Delta 0.013 ≈1% ITM Gamma 0.001 Theta -0.071 Vega 0.004 Open interest 265 Model this call Put · $200 In the money Snapshot session Jun 2, 2026 Last $49.49 Breakeven $150.51 Implied vol 247.4% Delta -0.97 ≈97% ITM Gamma 0.002 Theta -0.158 Vega 0.01 Open interest 0 Model this put
13	1	303%	0.057	$0.35		$83.60	-0.968	266.8%	1	0
Call · $210 Snapshot session Jul 15, 2026 Last $0.35 Breakeven $210.35 Implied vol 303% Delta 0.057 ≈6% ITM Gamma 0.003 Theta -0.351 Vega 0.02 Open interest 13 Model this call Put · $210 In the money Snapshot session May 18, 2026 Last $83.60 Breakeven $126.40 Implied vol 266.8% Delta -0.968 ≈97% ITM Gamma 0.002 Theta -0.18 Vega 0.01 Open interest 0 Model this put
34	10	291.3%	0.038	$0.65		—	-0.972	275.3%	—	0
Call · $220 Snapshot session Jul 10, 2026 Last $0.65 Breakeven $220.65 Implied vol 291.3% Delta 0.038 ≈4% ITM Gamma 0.002 Theta -0.243 Vega 0.01 Open interest 34 Model this call Put · $220 In the money Snapshot session Unknown Last — Breakeven — Implied vol 275.3% Delta -0.972 ≈97% ITM Gamma 0.002 Theta -0.164 Vega 0.01 Open interest 0 Model this put
111	10	327.7%	0.049	$0.01		$142.10	-0.97	293.3%	1	0
Call · $230 Snapshot session Jul 27, 2026 Last $0.01 Breakeven $230.01 Implied vol 327.7% Delta 0.049 ≈5% ITM Gamma 0.002 Theta -0.34 Vega 0.01 Open interest 111 Model this call Put · $230 In the money Snapshot session Jul 28, 2026 Last $142.10 Breakeven $87.90 Implied vol 293.3% Delta -0.97 ≈97% ITM Gamma 0.002 Theta -0.186 Vega 0.01 Open interest 0 Model this put
101	15	281.3%	0.018	$0.01		$102.80	-0.966	315.4%	6	0
Call · $240 Snapshot session Jul 29, 2026 Last $0.01 Breakeven $240.01 Implied vol 281.3% Delta 0.018 ≈2% ITM Gamma 0.001 Theta -0.124 Vega 0.005 Open interest 101 Model this call Put · $240 In the money Snapshot session Jun 11, 2026 Last $102.80 Breakeven $137.20 Implied vol 315.4% Delta -0.966 ≈97% ITM Gamma 0.002 Theta -0.228 Vega 0.01 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 · Apr 28, 2026–Aug 14, 2026; 2 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. The 25 strikes around the money are shown by default — switch to "All 40" for the wings.

Key facts CIK 917273 CUSIP 750917106 13F (30d) 431 filings 426 filers Visit website Investor relations