HBIO · Harvard Bioscience Inc

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$6.08 -0.11 (-1.78%) At close · Jul 24

Market Cap

$27.06M

4.51M

Options Chain

15-min delayed Underlying $6.08 · today Options Calculator

Positioning

Aug 21, 2026 · 25 days to expiry · 12 contracts

Put / call OI

0.08

Call-heavy positioning

Open interest

162

contracts outstanding

Volume

traded today

Max pain

$0.50

$5.58 below spot

ATM implied vol

1176.8%

market's expected move

Open interest by strike

Calls Puts

0.5

1.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 25d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
73	8	—	—	$0.08		—	—	—	—	10
Call · $0.5 In the money Last $0.08 Breakeven $0.58 Implied vol — Delta — Gamma — Theta — Vega — Open interest 73 Model this call Put · $0.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 Model this put
63	8	—	—	$0.14		$0.54	-0.027	845%	1	0
Call · $1 In the money Last $0.14 Breakeven $1.14 Implied vol — Delta — Gamma — Theta — Vega — Open interest 63 Model this call Put · $1 Last $0.54 Breakeven $0.46 Implied vol 845% Delta -0.027 ≈3% ITM Gamma 0.004 Theta -0.017 Vega 0.001 Open interest 0 Model this put
13	1	—	—	$0.05		—	-0.036	932.5%	—	0
Call · $1.5 In the money Last $0.05 Breakeven $1.55 Implied vol — Delta — Gamma — Theta — Vega — Open interest 13 Model this call Put · $1.5 Last — Breakeven — Implied vol 932.5% Delta -0.036 ≈4% ITM Gamma 0.005 Theta -0.024 Vega 0.001 Open interest 0 Model this put
0	—	—	—	—		—	-0.04	1023.7%	—	2
Call · $2 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $2 Last — Breakeven — Implied vol 1023.7% Delta -0.04 ≈4% ITM Gamma 0.005 Theta -0.029 Vega 0.001 Open interest 2 Model this put
0	—	—	—	—		—	-0.044	1113.8%	—	0
Call · $3 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $3 Last — Breakeven — Implied vol 1113.8% Delta -0.044 ≈4% ITM Gamma 0.005 Theta -0.034 Vega 0.001 Open interest 0 Model this put
1	—	—	—	—		—	-0.047	1176.8%	—	0
Call · $4 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $4 Last — Breakeven — Implied vol 1176.8% Delta -0.047 ≈5% ITM Gamma 0.005 Theta -0.037 Vega 0.002 Open interest 0 Model this put
Underlying $6.08

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 1123494 CUSIP 416906204 13F (30d) 3 filings 3 filers Visit website Investor relations