NSA · National Storage Affiliates Trust

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$43.41 -0.77 (-1.74%) At close · Jul 21

Market Cap

$3.35B

77.21M

Options Chain

15-min delayed Underlying $43.41 · at close Jul 21, 2026 Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 20 contracts

Put / call OI

2.83

Put-heavy positioning

Open interest

contracts outstanding

Volume

traded today

Max pain

$45.00

$1.59 above spot

ATM implied vol

39.2%

market's expected move

Open interest by strike

Calls Puts

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Oct 16 82d Jan 15 173d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		—	—	—	—	0
Call · $22.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $22.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	110.7%	0.98	—		—	—	—	—	0
Call · $25 In the money Last — Breakeven — Implied vol 110.7% Delta 0.98 ≈98% ITM Gamma 0.004 Theta -0.01 Vega 0.004 Open interest 0 Model this call Put · $25 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $30 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $30 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	53.3%	0.945	—		$0.10	-0.034	45.3%	1	21
Call · $35 In the money Last — Breakeven — Implied vol 53.3% Delta 0.945 ≈95% ITM Gamma 0.019 Theta -0.012 Vega 0.01 Open interest 0 Model this call Put · $35 Last $0.10 Breakeven $34.90 Implied vol 45.3% Delta -0.034 ≈3% ITM Gamma 0.014 Theta -0.008 Vega 0.011 Open interest 21 Model this put
0	—	36.8%	0.806	—		$0.35	-0.153	30.4%	5	8
Call · $40 In the money Last — Breakeven — Implied vol 36.8% Delta 0.806 ≈81% ITM Gamma 0.066 Theta -0.021 Vega 0.03 Open interest 0 Model this call Put · $40 Last $0.35 Breakeven $39.65 Implied vol 30.4% Delta -0.153 ≈15% ITM Gamma 0.067 Theta -0.016 Vega 0.03 Open interest 8 Model this put
Underlying $43.41
5	1	43.8%	0.396	$2.40		$1.75	-0.639	34.6%	1	5
Call · $45 Last $2.40 Breakeven $47.40 Implied vol 43.8% Delta 0.396 ≈40% ITM Gamma 0.076 Theta -0.037 Vega 0.047 Open interest 5 Model this call Put · $45 In the money Last $1.75 Breakeven $43.25 Implied vol 34.6% Delta -0.639 ≈64% ITM Gamma 0.094 Theta -0.03 Vega 0.041 Open interest 5 Model this put
7	1	43.8%	0.123	$0.15		—	-0.938	33.2%	—	0
Call · $50 Last $0.15 Breakeven $50.15 Implied vol 43.8% Delta 0.123 ≈12% ITM Gamma 0.04 Theta -0.02 Vega 0.022 Open interest 7 Model this call Put · $50 In the money Last — Breakeven — Implied vol 33.2% Delta -0.938 ≈94% ITM Gamma 0.03 Theta -0.01 Vega 0.013 Open interest 0 Model this put
0	—	57.7%	0.07	—		—	—	—	—	0
Call · $55 Last — Breakeven — Implied vol 57.7% Delta 0.07 ≈7% ITM Gamma 0.02 Theta -0.017 Vega 0.013 Open interest 0 Model this call Put · $55 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $60 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $60 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $65 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $65 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. 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. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1618563 CUSIP 637870106 13F (30d) 59 filings 59 filers Visit website Investor relations