BITI · ProShares Short Bitcoin ETF ETF

Alerts for BITI

$18.56 +0.44 (+2.43%) At close · Sep 4

Options Chain

Underlying $18.56 · at close Sep 4, 2026 Options Calculator

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Positioning

Sep 18, 2026 · 11 days to expiry · 66 contracts · mixed daily-bar sessions · Feb 5, 2026–Sep 4, 2026; 14 unknown

Put / call OI

0.12

Call-heavy positioning

Open interest

8,585

as of Sep 3, 2026

Volume

—

dated and unknown daily-bar sessions

Max pain

$20.00

$1.44 above spot

ATM implied vol

35.2%

market's expected move

Open interest by strike · near the money

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Sep 18 11d Oct 16 39d Dec 18 102d Jan 15 130d Mar 19 193d

Calls								Puts
OI	Vol	IV	Δ	Bid	Ask	Last	Strike	Last	Bid	Ask	Δ	IV	Vol	OI
2	2	—	—	$6.10	$7.20	$6.29		—	$0.00	$0.55	—	—	—	—
Call · $12 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $6.29 Breakeven $18.29 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $12 Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.389 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	—	—	$5.10	$6.30	$6.20		—	$0.00	$0.55	—	—	—	—
Call · $13 In the money Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 19:59:42.392 UTC Last $6.20 Breakeven $19.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $13 Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.420 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$4.20	$5.30	$4.65		—	$0.00	$0.05	—	—	—	—
Call · $14 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $4.65 Breakeven $18.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $14 Daily-bar session Unknown Quote as of 2026-09-04 19:59:33.564 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$3.20	$3.90	—		—	$0.00	$0.05	—	—	—	—
Call · $15 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.297 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $15 Daily-bar session Unknown Quote as of 2026-09-04 13:59:54.970 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	2	80.1%	0.874	$2.20	$3.30	$3.20		$0.05	$0.00	$0.50	—	—	1	7
Call · $16 In the money Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 19:59:42.409 UTC Last $3.20 Breakeven $19.20 Implied vol 80.1% Delta 0.874 ≈87% ITM Gamma 0.08 Theta -0.026 Vega 0.007 Open interest — OI effective date — Model this call Put · $16 Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 19:59:45.973 UTC Last $0.05 Breakeven $15.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 7 OI effective date Sep 3, 2026 Model this put
2	2	59.3%	0.82	$1.30	$2.25	$1.30		$0.38	$0.00	$0.30	—	—	1	1
Call · $17 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:54.068 UTC Last $1.30 Breakeven $18.30 Implied vol 59.3% Delta 0.82 ≈82% ITM Gamma 0.137 Theta -0.024 Vega 0.009 Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $17 Daily-bar session Aug 27, 2026 Quote as of 2026-09-04 19:59:55.415 UTC Last $0.38 Breakeven $16.62 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
202	53	53%	0.652	$0.85	$1.15	$0.88		$0.28	$0.00	$0.40	—	—	16	26
Call · $18 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:45.975 UTC Last $0.88 Breakeven $18.88 Implied vol 53% Delta 0.652 ≈65% ITM Gamma 0.216 Theta -0.03 Vega 0.012 Open interest 202 OI effective date Sep 3, 2026 Model this call Put · $18 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:55.415 UTC Last $0.28 Breakeven $17.72 Implied vol — Delta — Gamma — Theta — Vega — Open interest 26 OI effective date Sep 3, 2026 Model this put
Underlying $18.56
480	43	34.9%	0.368	$0.10	$0.45	$0.37		$0.70	$0.40	$1.00	-0.63	35.4%	11	63
Call · $19 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:59.952 UTC Last $0.37 Breakeven $19.37 Implied vol 34.9% Delta 0.368 ≈37% ITM Gamma 0.335 Theta -0.02 Vega 0.012 Open interest 480 OI effective date Sep 3, 2026 Model this call Put · $19 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.70 Breakeven $18.30 Implied vol 35.4% Delta -0.63 ≈63% ITM Gamma 0.331 Theta -0.018 Vega 0.012 Open interest 63 OI effective date Sep 3, 2026 Model this put
1.3k	48	46.2%	0.19	$0.05	$0.25	$0.17		$1.42	$0.95	$1.90	-0.973	21.7%	8	37
Call · $20 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:42.408 UTC Last $0.17 Breakeven $20.17 Implied vol 46.2% Delta 0.19 ≈19% ITM Gamma 0.182 Theta -0.019 Vega 0.009 Open interest 1.3k OI effective date Sep 3, 2026 Model this call Put · $20 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:50.326 UTC Last $1.42 Breakeven $18.58 Implied vol 21.7% Delta -0.973 ≈97% ITM Gamma 0.088 Theta 0 Vega 0.002 Open interest 37 OI effective date Sep 3, 2026 Model this put
1.2k	15	52.6%	0.098	$0.05	$0.10	$0.08		$2.25	$2.00	$2.85	-0.98	34%	1	32
Call · $21 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:55:26.507 UTC Last $0.08 Breakeven $21.08 Implied vol 52.6% Delta 0.098 ≈10% ITM Gamma 0.102 Theta -0.013 Vega 0.006 Open interest 1.2k OI effective date Sep 3, 2026 Model this call Put · $21 In the money Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:43.441 UTC Last $2.25 Breakeven $18.75 Implied vol 34% Delta -0.98 ≈98% ITM Gamma 0.045 Theta 0 Vega 0.002 Open interest 32 OI effective date Sep 3, 2026 Model this put
387	11	—	—	$0.00	$0.20	$0.05		$2.65	$2.85	$3.70	—	—	1	67
Call · $22 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.05 Breakeven $22.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 387 OI effective date Sep 3, 2026 Model this call Put · $22 In the money Daily-bar session Sep 2, 2026 Quote as of 2026-09-04 19:59:50.321 UTC Last $2.65 Breakeven $19.35 Implied vol — Delta — Gamma — Theta — Vega — Open interest 67 OI effective date Sep 3, 2026 Model this put
195	1	—	—	$0.00	$0.05	$0.05		$4.30	$3.90	$4.70	—	—	1	18
Call · $23 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 14:51:54.454 UTC Last $0.05 Breakeven $23.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 195 OI effective date Sep 3, 2026 Model this call Put · $23 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:50.321 UTC Last $4.30 Breakeven $18.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 18 OI effective date Sep 3, 2026 Model this put
435	7	—	—	$0.00	$0.30	$0.05		$5.40	$5.00	$5.80	—	—	2	105
Call · $24 Daily-bar session Sep 3, 2026 Quote as of 2026-09-04 19:59:55.415 UTC Last $0.05 Breakeven $24.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 435 OI effective date Sep 3, 2026 Model this call Put · $24 In the money Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:42.392 UTC Last $5.40 Breakeven $18.60 Implied vol — Delta — Gamma — Theta — Vega — Open interest 105 OI effective date Sep 3, 2026 Model this put
342	1	—	—	$0.00	$0.15	$0.05		$5.90	$5.80	$6.70	—	—	10	79
Call · $25 Daily-bar session Sep 4, 2026 Quote as of 2026-09-04 19:59:42.409 UTC Last $0.05 Breakeven $25.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 342 OI effective date Sep 3, 2026 Model this call Put · $25 In the money Daily-bar session Aug 26, 2026 Quote as of 2026-09-04 19:59:42.409 UTC Last $5.90 Breakeven $19.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 79 OI effective date Sep 3, 2026 Model this put
640	2	—	—	$0.00	$0.10	$0.15		$7.33	$6.90	$7.80	—	—	3	50
Call · $26 Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 13:59:54.970 UTC Last $0.15 Breakeven $26.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 640 OI effective date Sep 3, 2026 Model this call Put · $26 In the money Daily-bar session Aug 24, 2026 Quote as of 2026-09-04 19:59:42.392 UTC Last $7.33 Breakeven $18.67 Implied vol — Delta — Gamma — Theta — Vega — Open interest 50 OI effective date Sep 3, 2026 Model this put
84	1	—	—	$0.00	$0.30	$0.55		$7.81	$8.30	$8.70	—	—	2	181
Call · $27 Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:59:42.408 UTC Last $0.55 Breakeven $27.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 84 OI effective date Sep 3, 2026 Model this call Put · $27 In the money Daily-bar session Aug 28, 2026 Quote as of 2026-09-04 19:59:54.776 UTC Last $7.81 Breakeven $19.19 Implied vol — Delta — Gamma — Theta — Vega — Open interest 181 OI effective date Sep 3, 2026 Model this put
1.6k	2	—	—	$0.00	$0.10	$0.15		$9.25	$8.90	$9.80	—	—	2	—
Call · $28 Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:49:50.802 UTC Last $0.15 Breakeven $28.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1.6k OI effective date Sep 3, 2026 Model this call Put · $28 In the money Daily-bar session Aug 25, 2026 Quote as of 2026-09-04 19:59:42.297 UTC Last $9.25 Breakeven $18.75 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
85	1	—	—	$0.00	$0.55	$0.30		—	$9.80	$10.70	—	—	—	—
Call · $29 Daily-bar session Jul 31, 2026 Quote as of 2026-09-04 19:59:45.971 UTC Last $0.30 Breakeven $29.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 85 OI effective date Sep 3, 2026 Model this call Put · $29 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.392 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
388	23	—	—	$0.00	$0.05	$0.05		$10.81	$11.30	$11.70	—	—	2	1
Call · $30 Daily-bar session Aug 31, 2026 Quote as of 2026-09-04 13:30:26.386 UTC Last $0.05 Breakeven $30.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 388 OI effective date Sep 3, 2026 Model this call Put · $30 In the money Daily-bar session Aug 28, 2026 Quote as of 2026-09-04 19:59:55.829 UTC Last $10.81 Breakeven $19.19 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
72	5	—	—	$0.00	$0.55	$0.10		—	$11.70	$12.80	—	—	—	—
Call · $31 Daily-bar session Aug 6, 2026 Quote as of 2026-09-04 19:59:45.972 UTC Last $0.10 Breakeven $31.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 72 OI effective date Sep 3, 2026 Model this call Put · $31 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.297 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
20	4	—	—	$0.00	$0.55	$0.05		$9.80	$12.70	$13.80	—	—	1	—
Call · $32 Daily-bar session Aug 17, 2026 Quote as of 2026-09-04 19:59:42.420 UTC Last $0.05 Breakeven $32.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 OI effective date Sep 3, 2026 Model this call Put · $32 In the money Daily-bar session Aug 19, 2026 Quote as of 2026-09-04 19:59:42.392 UTC Last $9.80 Breakeven $22.20 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
3	4	—	—	$0.00	$0.55	$0.45		—	$13.70	$14.80	—	—	—	—
Call · $33 Daily-bar session Apr 15, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.45 Breakeven $33.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 OI effective date Sep 3, 2026 Model this call Put · $33 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.409 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
24	21	—	—	$0.00	$0.55	$0.55		$11.30	$14.70	$15.80	—	—	1	—
Call · $34 Daily-bar session Jun 18, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.55 Breakeven $34.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 24 OI effective date Sep 3, 2026 Model this call Put · $34 In the money Daily-bar session Mar 27, 2026 Quote as of 2026-09-04 19:59:42.392 UTC Last $11.30 Breakeven $22.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
71	32	—	—	$0.00	$0.55	$0.05		$9.70	$15.70	$16.80	—	—	1	1
Call · $35 Daily-bar session Aug 13, 2026 Quote as of 2026-09-04 19:59:45.973 UTC Last $0.05 Breakeven $35.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 71 OI effective date Sep 3, 2026 Model this call Put · $35 In the money Daily-bar session Jun 26, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $9.70 Breakeven $25.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
2	2	—	—	$0.00	$0.55	$1.53		$14.70	$16.80	$17.70	—	—	1	—
Call · $36 Daily-bar session Mar 20, 2026 Quote as of 2026-09-04 19:59:42.420 UTC Last $1.53 Breakeven $37.53 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $36 In the money Daily-bar session Aug 19, 2026 Quote as of 2026-09-04 19:59:42.297 UTC Last $14.70 Breakeven $21.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
2	1	—	—	$0.00	$0.20	$0.38		—	$17.70	$18.80	—	—	—	—
Call · $37 Daily-bar session Aug 10, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.38 Breakeven $37.38 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $37 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.255 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	2	—	—	$0.00	$0.20	$0.45		—	$18.70	$19.80	—	—	—	—
Call · $38 Daily-bar session Jun 24, 2026 Quote as of 2026-09-04 19:59:42.389 UTC Last $0.45 Breakeven $38.45 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $38 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.392 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
—	—	—	—	$0.00	$0.55	—		$16.90	$19.70	$20.80	—	—	1	—
Call · $39 Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.389 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $39 In the money Daily-bar session Mar 2, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $16.90 Breakeven $22.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
10	5	—	—	$0.00	$0.10	$0.10		$15.00	$20.70	$21.80	—	—	1	1
Call · $40 Daily-bar session Jul 20, 2026 Quote as of 2026-09-04 13:59:54.970 UTC Last $0.10 Breakeven $40.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 OI effective date Sep 3, 2026 Model this call Put · $40 In the money Daily-bar session Feb 5, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $15.00 Breakeven $25.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this put
2	2	—	—	$0.00	$0.55	$1.13		—	$21.80	$22.70	—	—	—	—
Call · $41 Daily-bar session Mar 20, 2026 Quote as of 2026-09-04 19:59:47.790 UTC Last $1.13 Breakeven $42.13 Implied vol — Delta — Gamma — Theta — Vega — Open interest 2 OI effective date Sep 3, 2026 Model this call Put · $41 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.409 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
1	1	—	—	$0.00	$0.55	$0.10		$16.04	$23.30	$23.60	—	—	14	247
Call · $42 Daily-bar session Jun 8, 2026 Quote as of 2026-09-04 19:59:42.419 UTC Last $0.10 Breakeven $42.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 OI effective date Sep 3, 2026 Model this call Put · $42 In the money Daily-bar session Jun 30, 2026 Quote as of 2026-09-04 19:59:55.415 UTC Last $16.04 Breakeven $25.96 Implied vol — Delta — Gamma — Theta — Vega — Open interest 247 OI effective date Sep 3, 2026 Model this put
—	—	—	—	$0.00	$0.10	—		—	$23.70	$24.80	—	—	—	—
Call · $43 Daily-bar session Unknown Quote as of 2026-09-04 19:59:58.964 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this call Put · $43 In the money Daily-bar session Unknown Quote as of 2026-09-04 19:59:42.409 UTC Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put
84	40	—	—	$0.00	$0.05	$0.10		$24.58	$24.70	$25.80	—	—	1	—
Call · $44 Daily-bar session Aug 14, 2026 Quote as of 2026-09-04 13:59:54.970 UTC Last $0.10 Breakeven $44.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 84 OI effective date Sep 3, 2026 Model this call Put · $44 In the money Daily-bar session Aug 21, 2026 Quote as of 2026-09-04 19:59:42.255 UTC Last $24.58 Breakeven $19.42 Implied vol — Delta — Gamma — Theta — Vega — Open interest — OI effective date — Model this put

About this data

Each contract's last price, day range and volume belong to the daily-bar session shown in its details; unknown means the source omitted that timestamp. Open interest has its own effective date shown separately; implied volatility and greeks are model values computed when fetched. This chain has mixed daily-bar sessions · Feb 5, 2026–Sep 4, 2026; 14 unknown. Positioning totals are shown only when every returned open-interest value has the same known effective date. Bid and ask are real-time consolidated OPRA readings.

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 20 strikes around the money are shown by default — switch to "All 33" for the wings. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.