Bel Fuse Inc. (BELFB)
NASDAQ: BELFB
· Real-Time Price · USD
143.92
0.77 (0.54%)
At close: Sep 10, 2025, 11:10 AM
BELFB Option Overview
Overview for all option chains of BELFB. As of September 10, 2025, BELFB options have an IV of 133.01% and an IV rank of 186.79%. The volume is 5 contracts, which is 71.43% of average daily volume of 7 contracts. The volume put-call ratio is 0, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
133.01%IV Rank
186.79%Historical Volatility
35.27%IV Low
45.4% on Jan 24, 2025IV High
92.3% on Sep 09, 2025Open Interest (OI)
Today's Open Interest
1,962Put-Call Ratio
0.05Put Open Interest
87Call Open Interest
1,875Open Interest Avg (30-day)
527Today vs Open Interest Avg (30-day)
372.3%Option Volume
Today's Volume
5Put-Call Ratio
0Put Volume
0Call Volume
5Volume Avg (30-day)
7Today vs Volume Avg (30-day)
71.43%Option Chain Statistics
This table provides a comprehensive overview of all BELFB 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 |
| Sep 19, 2025 | 4 | 0 | 0 | 60 | 30 | 0.5 | 133.01% | 90 |
| Oct 17, 2025 | 1 | 0 | 0 | 1 | 2 | 2 | 52.9% | 130 |
| Dec 19, 2025 | 0 | 0 | 0 | 98 | 17 | 0.17 | 51.45% | 80 |
| Jan 16, 2026 | 0 | 0 | 0 | 1,433 | 0 | 0 | n/a | 7 |
| Mar 20, 2026 | 0 | 0 | 0 | 283 | 38 | 0.13 | 48.23% | 120 |