PSIX · Power Solutions International, Inc.

Track PSIX — free

$36.43 +0.13 (+0.36%) At close · Aug 21

Market Cap

$840.27M

23.07M

Options Chain

Underlying $36.43 · at close Aug 21, 2026 Options Calculator

Positioning

Sep 18, 2026 · 27 days to expiry · 24 contracts · mixed snapshot sessions · Jul 20, 2026–Aug 21, 2026; 3 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

Sep 18 27d Oct 16 55d Nov 20 90d Feb 19 181d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	233.4%	0.955	—		$0.40	-0.035	214.3%	6	6
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol 233.4% Delta 0.955 ≈96% ITM Gamma 0.004 Theta -0.041 Vega 0.011 Open interest 0 Model this call Put · $15 Snapshot session Jul 30, 2026 Last $0.40 Breakeven $14.60 Implied vol 214.3% Delta -0.035 ≈4% ITM Gamma 0.004 Theta -0.03 Vega 0.006 Open interest 6 Model this put
0	—	179%	0.96	—		$0.69	-0.045	185.6%	2	2
Call · $17.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 179% Delta 0.96 ≈96% ITM Gamma 0.005 Theta -0.03 Vega 0.007 Open interest 0 Model this call Put · $17.5 Snapshot session Jul 20, 2026 Last $0.69 Breakeven $16.81 Implied vol 185.6% Delta -0.045 ≈5% ITM Gamma 0.005 Theta -0.032 Vega 0.012 Open interest 2 Model this put
3	1	181.1%	0.926	$24.00		$0.70	-0.054	155.5%	1	1
Call · $20 In the money Snapshot session Aug 10, 2026 Last $24.00 Breakeven $44.00 Implied vol 181.1% Delta 0.926 ≈93% ITM Gamma 0.008 Theta -0.048 Vega 0.012 Open interest 3 Model this call Put · $20 Snapshot session Aug 5, 2026 Last $0.70 Breakeven $19.30 Implied vol 155.5% Delta -0.054 ≈5% ITM Gamma 0.007 Theta -0.031 Vega 0.013 Open interest 1 Model this put
4	4	152.5%	0.912	$7.51		$0.23	-0.065	129%	1	1
Call · $22.5 In the money Snapshot session Jul 28, 2026 Last $7.51 Breakeven $30.01 Implied vol 152.5% Delta 0.912 ≈91% ITM Gamma 0.011 Theta -0.047 Vega 0.013 Open interest 4 Model this call Put · $22.5 Snapshot session Aug 7, 2026 Last $0.23 Breakeven $22.27 Implied vol 129% Delta -0.065 ≈6% ITM Gamma 0.01 Theta -0.029 Vega 0.013 Open interest 1 Model this put
1	2	137.1%	0.878	$17.40		$0.50	-0.06	95%	2	37
Call · $25 In the money Snapshot session Aug 10, 2026 Last $17.40 Breakeven $42.40 Implied vol 137.1% Delta 0.878 ≈88% ITM Gamma 0.015 Theta -0.052 Vega 0.021 Open interest 1 Model this call Put · $25 Snapshot session Aug 20, 2026 Last $0.50 Breakeven $24.50 Implied vol 95% Delta -0.06 ≈6% ITM Gamma 0.013 Theta -0.02 Vega 0.014 Open interest 37 Model this put
19	31	97.7%	0.797	$7.08		$0.80	-0.174	81.9%	2	64
Call · $30 In the money Snapshot session Aug 21, 2026 Last $7.08 Breakeven $37.08 Implied vol 97.7% Delta 0.797 ≈80% ITM Gamma 0.03 Theta -0.053 Vega 0.031 Open interest 19 Model this call Put · $30 Snapshot session Aug 21, 2026 Last $0.80 Breakeven $29.20 Implied vol 81.9% Delta -0.174 ≈17% ITM Gamma 0.032 Theta -0.038 Vega 0.023 Open interest 64 Model this put
288	21	95.8%	0.598	$3.98		$2.19	-0.397	64.1%	4	116
Call · $35 In the money Snapshot session Aug 21, 2026 Last $3.98 Breakeven $38.98 Implied vol 95.8% Delta 0.598 ≈60% ITM Gamma 0.041 Theta -0.069 Vega 0.038 Open interest 288 Model this call Put · $35 Snapshot session Aug 21, 2026 Last $2.19 Breakeven $32.81 Implied vol 64.1% Delta -0.397 ≈40% ITM Gamma 0.062 Theta -0.043 Vega 0.038 Open interest 116 Model this put
Underlying $36.43
221	97	85.2%	0.373	$1.70		$5.00	-0.67	70.4%	4	100
Call · $40 Snapshot session Aug 21, 2026 Last $1.70 Breakeven $41.70 Implied vol 85.2% Delta 0.373 ≈37% ITM Gamma 0.046 Theta -0.06 Vega 0.036 Open interest 221 Model this call Put · $40 In the money Snapshot session Aug 21, 2026 Last $5.00 Breakeven $35.00 Implied vol 70.4% Delta -0.67 ≈67% ITM Gamma 0.053 Theta -0.044 Vega 0.036 Open interest 100 Model this put
285	35	77.4%	0.173	$0.68		$7.47	-0.935	53.7%	1	8
Call · $45 Snapshot session Aug 21, 2026 Last $0.68 Breakeven $45.68 Implied vol 77.4% Delta 0.173 ≈17% ITM Gamma 0.034 Theta -0.037 Vega 0.029 Open interest 285 Model this call Put · $45 In the money Snapshot session Aug 18, 2026 Last $7.47 Breakeven $37.53 Implied vol 53.7% Delta -0.935 ≈93% ITM Gamma 0.028 Theta -0.01 Vega 0.011 Open interest 8 Model this put
492	1	84.7%	0.096	$0.50		$12.47	—	—	10	20
Call · $50 Snapshot session Aug 21, 2026 Last $0.50 Breakeven $50.50 Implied vol 84.7% Delta 0.096 ≈10% ITM Gamma 0.021 Theta -0.027 Vega 0.021 Open interest 492 Model this call Put · $50 In the money Snapshot session Aug 18, 2026 Last $12.47 Breakeven $37.53 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 Model this put
15	8	94.4%	0.066	$0.33		—	—	—	—	0
Call · $55 Snapshot session Aug 19, 2026 Last $0.33 Breakeven $55.33 Implied vol 94.4% Delta 0.066 ≈7% ITM Gamma 0.014 Theta -0.022 Vega 0.013 Open interest 15 Model this call Put · $55 In the money Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
360	373	124.3%	0.089	$0.75		$19.50	—	—	3	4
Call · $60 Snapshot session Aug 13, 2026 Last $0.75 Breakeven $60.75 Implied vol 124.3% Delta 0.089 ≈9% ITM Gamma 0.013 Theta -0.037 Vega 0.013 Open interest 360 Model this call Put · $60 In the money Snapshot session Aug 14, 2026 Last $19.50 Breakeven $40.50 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 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 20, 2026–Aug 21, 2026; 3 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 1137091 CUSIP 73933G202 13F (30d) 143 filings 140 filers Visit website Investor relations