Old Second Bancorp (OSBC) Options Chain
NASDAQ: OSBCFinanceMajor BanksUSD
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Expiration date
- Expiration
- Dec 18, 2026
- Days to expiration
- 69
- Share price
- $24.61
- Put/call ratio (OI)
- 0.33
- Put/call ratio (volume)
- 0.10
- Expected move
- ±$4.90
- Open interest (C / P)
- 63 / 21
OSBC options summary
The OSBC options chain for the December 18, 2026 expiration lists 5 call and 4 put contracts, with 69 days until expiration. Open interest stands at 63 calls and 21 puts, a put/call ratio of 0.33, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $25.00 strike is 45.8%, which implies the market expects a move of about ±$4.90 (19.9%) in Old Second Bancorp stock by expiration.
The most open interest sits at the $25.00 call (32 contracts) and the $20.00 put (6 contracts).
Summary generated from market data by MetaCap's automated system. Methodology
OSBC options chain · December 18, 2026
| Calls | Puts | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Last | Bid | Ask | Strike | Bid | Ask | Last | |||||
| — | — | — | 17.50 | 0.00 | 4.80 | 0.55 | |||||
| 6.65 | 3.40 | 6.70 | 20.00 | 0.00 | 1.85 | 0.70 | |||||
| 2.80 | 1.90 | 5.90 | 22.50 | 0.00 | 2.10 | 0.55 | |||||
| 1.25 | 0.05 | 1.50 | 25.00 | 0.00 | 4.90 | 1.30 | |||||
| 0.15 | 0.00 | 0.95 | 30.00 | — | — | — | |||||
| 0.10 | 0.00 | 0.00 | 35.00 | — | — | — | |||||
In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.
Frequently asked questions
What is the OSBC put/call ratio?
For the December 18, 2026 expiration, the OSBC put/call ratio based on open interest is 0.33 (21 puts vs 63 calls), and 0.10 based on today's volume. A ratio above 1 means more puts than calls.
What is OSBC's implied volatility?
At-the-money implied volatility for OSBC options expiring December 18, 2026 is about 45.8%, an annualized estimate of how much the market expects Old Second Bancorp stock to move.
How many OSBC option expiration dates are there?
OSBC has 4 listed expiration dates, from Oct 16, 2026 to Mar 19, 2027.
What does "in the money" mean?
A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.