UPB · Upstream Bio, Inc.

Track UPB — free Ask ALVIS about UPB

$6.39 -0.01 (-0.16%)

Market Cap

$348.29M

54.42M

Options Chain

15-min delayed Underlying $6.39 · today Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 28 contracts

Put / call OI

0.43

Call-heavy positioning

Open interest

1,258

contracts outstanding

Volume

347

traded today

Max pain

$7.50

$1.11 above spot

ATM implied vol

103.9%

market's expected move

Open interest by strike

Calls Puts

2.5

7.5

12.5

17.5

22.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Nov 20 114d Feb 19 205d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
1	10	215.4%	0.979	$7.00		$0.08	—	—	4	4
Call · $2.5 In the money Last $7.00 Breakeven $9.50 Implied vol 215.4% Delta 0.979 ≈98% ITM Gamma 0.015 Theta -0.004 Vega 0.001 Open interest 1 Model this call Put · $2.5 Last $0.08 Breakeven $2.42 Implied vol — Delta — Gamma — Theta — Vega — Open interest 4 Model this put
10	15	78%	0.916	$4.40		$0.10	-0.156	114.8%	10	260
Call · $5 In the money Last $4.40 Breakeven $9.40 Implied vol 78% Delta 0.916 ≈92% ITM Gamma 0.123 Theta -0.005 Vega 0.002 Open interest 10 Model this call Put · $5 Last $0.10 Breakeven $4.90 Implied vol 114.8% Delta -0.156 ≈16% ITM Gamma 0.13 Theta -0.01 Vega 0.004 Open interest 260 Model this put
Underlying $6.39
104	81	122.8%	0.365	$0.50		$1.40	-0.738	85.1%	2	45
Call · $7.5 Last $0.50 Breakeven $8.00 Implied vol 122.8% Delta 0.365 ≈37% ITM Gamma 0.191 Theta -0.016 Vega 0.006 Open interest 104 Model this call Put · $7.5 In the money Last $1.40 Breakeven $6.10 Implied vol 85.1% Delta -0.738 ≈74% ITM Gamma 0.246 Theta -0.009 Vega 0.005 Open interest 45 Model this put
60	124	201.4%	0.268	$1.13		$2.47	-0.912	121.1%	3	50
Call · $10 Last $1.13 Breakeven $11.13 Implied vol 201.4% Delta 0.268 ≈27% ITM Gamma 0.102 Theta -0.023 Vega 0.005 Open interest 60 Model this call Put · $10 In the money Last $2.47 Breakeven $7.53 Implied vol 121.1% Delta -0.912 ≈91% ITM Gamma 0.087 Theta -0.006 Vega 0.003 Open interest 50 Model this put
324	2	254.6%	0.233	$0.05		$3.31	—	—	1	0
Call · $12.5 Last $0.05 Breakeven $12.55 Implied vol 254.6% Delta 0.233 ≈23% ITM Gamma 0.075 Theta -0.028 Vega 0.006 Open interest 324 Model this call Put · $12.5 In the money Last $3.31 Breakeven $9.19 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
195	14	251%	0.151	$0.05		$8.70	—	—	4	14
Call · $15 Last $0.05 Breakeven $15.05 Implied vol 251% Delta 0.151 ≈15% ITM Gamma 0.058 Theta -0.021 Vega 0.004 Open interest 195 Model this call Put · $15 In the money Last $8.70 Breakeven $6.30 Implied vol — Delta — Gamma — Theta — Vega — Open interest 14 Model this put
27	1	—	—	$0.45		$5.21	—	—	1	0
Call · $17.5 Last $0.45 Breakeven $17.95 Implied vol — Delta — Gamma — Theta — Vega — Open interest 27 Model this call Put · $17.5 In the money Last $5.21 Breakeven $12.29 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
30	15	—	—	$0.15		$6.95	—	—	1	0
Call · $20 Last $0.15 Breakeven $20.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 30 Model this call Put · $20 In the money Last $6.95 Breakeven $13.05 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		$15.03	—	—	1	0
Call · $22.5 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $22.5 In the money Last $15.03 Breakeven $7.47 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	1	—	—	$9.00		$6.00	—	—	1	0
Call · $25 Last $9.00 Breakeven $34.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $25 In the money Last $6.00 Breakeven $19.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
31	10	—	—	$0.15		$16.92	—	—	2	5
Call · $30 Last $0.15 Breakeven $30.15 Implied vol — Delta — Gamma — Theta — Vega — Open interest 31 Model this call Put · $30 In the money Last $16.92 Breakeven $13.08 Implied vol — Delta — Gamma — Theta — Vega — Open interest 5 Model this put
77	10	—	—	$0.25		$12.00	-0.984	291.4%	15	0
Call · $35 Last $0.25 Breakeven $35.25 Implied vol — Delta — Gamma — Theta — Vega — Open interest 77 Model this call Put · $35 In the money Last $12.00 Breakeven $23.00 Implied vol 291.4% Delta -0.984 ≈98% ITM Gamma 0.013 Theta -0.003 Vega 0 Open interest 0 Model this put
20	1	—	—	$0.70		$15.74	—	—	2	0
Call · $40 Last $0.70 Breakeven $40.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 20 Model this call Put · $40 In the money Last $15.74 Breakeven $24.26 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	—	—	$0.65		$19.40	—	—	15	0
Call · $45 Last $0.65 Breakeven $45.65 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $45 In the money Last $19.40 Breakeven $25.60 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 2022626 CUSIP 91678A107 13F (30d) 13 filings 13 filers Visit website Investor relations