CERUS CORP (CERS) Options Volume
1,079 CERUS CORP (CERS) option contracts changed hands in the latest session, at a put/call volume ratio of 12.66. This page tracks how actively CERS options trade — contracts and dollars — and flags individual contracts running far above their own 30-day average volume.
Data as of Jul 10, 2026, 8:00 PM ET · OPRA data 15 minutes delayed · For information only — not investment advice.
Options Volume & Premium Flow
| Total options volume | 1,079 |
| Call volume | 79 |
| Put volume | 1,000 |
| Put/call volume ratio | 12.66 |
| Listed contracts | 76 |
| Call premium traded | $3.06K |
| Put premium traded | $5K |
| Premium put/call ratio | 1.63 |
| Open interest rank (31 day) | 95 / 100 |
CERS Options Volume Trend
CERS total options volume per session, past year.
CERS put/call volume ratio, past year.
CERS Unusual Options Activity
No CERS contract currently trades at 3× its 30-day average volume with at least 500 contracts — nothing clears OptiView's unusual-activity bar today.
With a put/call volume ratio of 12.66, today's trading is tilted toward puts. Measured in dollars rather than contracts, $3.06K of call premium and $5K of put premium changed hands — the larger premium flow is on the put side.
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CERS Options FAQ
How many CERS options traded today?
1,079 CERS option contracts traded as of Jul 10, 2026 — 79 calls and 1,000 puts.
Is there unusual options activity in CERS today?
No CERS contract currently clears OptiView's unusual-activity bar as of Jul 10, 2026, which requires at least 3× the contract's 30-day average volume and 500 contracts traded.
Methodology. IV rank compares the current 30-day at-the-money implied volatility with its highest and lowest values over the past 52 weeks. Max pain is the strike that minimizes the total payout to option holders at expiration. The call and put walls are the strikes carrying the largest call and put open interest across all expirations. Net gamma exposure (GEX) is measured from the dealer perspective. All statistics are derived from delayed OPRA options data.
Options trading involves significant risk, and losses can exceed your initial investment. Always consult a licensed financial professional before making investment decisions. OptiView does not provide financial advice; all figures on this page are descriptive statistics, not recommendations.