Cisco Systems, Inc. options tape
Read from CBOE's delayed chain on 23 September 2026, with Cisco Systems, Inc. at $106.35: open interest within 90 days was 197,254 call and 172,874 put contracts, a put/call ratio of 0.88; the day's volume was 63,418 calls and 25,734 puts (0.41). The most call open interest sits at the $135.00 strike (18,697 contracts) and the most put open interest at $105.00 (19,007). The at-the-money straddle for 25 September 2026, 2 days out, was priced at 2.5% of spot. For 16 October 2026, implied volatility was 31.1% at the put 5% below spot and 30.6% at the call 5% above, +0.4 points.
Where the open interest sits
| Side | Strike | Open interest |
|---|---|---|
| Calls | $135.00 | 18,697 |
| Puts | $105.00 | 19,007 |
The strike with the most open interest on each side, across expiries within 90 days.
Strikes where the day's volume was at least twice the open interest
| Contract | Volume | Open interest before | Premium traded |
|---|---|---|---|
| 25 September 2026 call at $105.00 | 2,186 | 131 | $482,013 |
| 25 September 2026 call at $109.00 | 10,087 | 1,455 | $448,871 |
| 25 September 2026 call at $106.00 | 2,174 | 33 | $343,492 |
| 25 September 2026 put at $105.00 | 2,871 | 669 | $218,196 |
| 25 September 2026 call at $107.00 | 1,946 | 25 | $210,168 |
| 25 September 2026 put at $106.00 | 1,795 | 874 | $197,450 |
| 25 September 2026 call at $108.00 | 1,912 | 366 | $135,752 |
| 16 October 2026 put at $106.00 | 399 | 10 | $123,690 |
Volume of at least 200 contracts and at least twice the open interest, with at least $25,000 of premium at the mid; contracts expiring the same day are left out. Premium is mid price times volume times 100.
Open interest built since 22 September 2026
| Contract | Open interest now | Change |
|---|---|---|
| 25 September 2026 call at $114.00 | 2,331 | +1,664 |
| 16 October 2026 call at $112.00 | 1,611 | +1,611 |
| 16 October 2026 call at $135.00 | 3,864 | +1,383 |
| 25 September 2026 call at $116.00 | 1,719 | +1,322 |
| 25 September 2026 call at $112.00 | 2,145 | +1,231 |
| 25 September 2026 call at $113.00 | 2,448 | +896 |
| 25 September 2026 call at $115.00 | 2,003 | +697 |
| 25 September 2026 call at $110.00 | 1,514 | +540 |
Contracts whose open interest rose by 250 or more against the previous day's snapshot.
Source
CBOE delayed quotes for CSCO, the free 15-minute-delayed chain, read once a day. Figures describe positioning; they are not a forecast.
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