Price Alert

Spero Therapeutics Inc. (SPRO)

NASDAQ: SPRO · Real-Time Price · USD

1.89

-0.05 (-2.58%)

At close: Sep 26, 2025, 3:59 PM

1.89

0.00%

After-hours: Sep 26, 2025, 07:50 PM EDT

SPRO Option Overview

Overview for all option chains of SPRO. As of September 28, 2025, SPRO options have an IV of 281.81% and an IV rank of 45.43%. The volume is 156 contracts, which is 58.43% of average daily volume of 267 contracts. The volume put-call ratio is 0, indicating a bullish sentiment in the market.

Implied Volatility

Implied Volatility (30d)

281.81%

IV Rank

45.43%

Historical Volatility

42.75%

IV Low

100.14% on Jul 11, 2025

IV High

500% on Feb 20, 2025

Open Interest (OI)

Today's Open Interest

9,538

Put-Call Ratio

0.25

Put Open Interest

1,926

Call Open Interest

7,612

Open Interest Avg (30-day)

9,974

Today vs Open Interest Avg (30-day)

95.63%

Option Volume

Today's Volume

156

Put-Call Ratio

Put Volume

Call Volume

156

Volume Avg (30-day)

267

Today vs Volume Avg (30-day)

58.43%

Option Chain Statistics

This table provides a comprehensive overview of all SPRO options grouped by their expiration dates.

Expiration	Call Vol	Put Vol	P/C Vol	Call OI	Put OI	P/C OI	Implied Volatility	Max Pain
Oct 17, 2025	2	0	0	3,959	1,276	0.32	281.81%	2.5
Nov 21, 2025	0	0	0	13	0	0	165.65%	0.5
Jan 16, 2026	4	0	0	3,147	550	0.17	134.46%	2.5
Apr 17, 2026	150	0	0	493	100	0.2	138.64%	2