Cytosorbents Corporation (CTSO) Volume & Open Interest
Volume and open interest by strike show where trading activity and outstanding positions are concentrated. Clusters of OI often act as support and resistance levels.
Cytosorbents Corporation (CTSO) operates in the Healthcare sector, specifically the Medical - Devices industry, with a market capitalization near $30.9M, listed on NASDAQ, employing roughly 149 people, carrying a beta of 1.44 to the broader market. Cytosorbents Corporation engages in the research, development, and commercialization of medical devices with its blood purification technology platform incorporating a proprietary adsorbent and porous polymer technology. Led by Phillip Chan, public since 2006-08-08.
Snapshot as of May 29, 2026.
- Spot Price
- $0.49
- Total Volume
- 252
- Total OI
- 79
- Call OI
- 78
- Put OI
- 1
As of May 29, 2026, Cytosorbents Corporation (CTSO) has 252 contracts traded today against 79 contracts outstanding. Open interest breaks down as 78 calls and 1 puts. Turnover ratio is 3.19: high churn, indicating active repositioning. Comparing today's volume to accumulated open interest reveals whether flow is opening new positions or closing existing ones, with heavy OI strikes often acting as support and resistance.
How CTSO volume & open interest Data Feeds Strategy Selection
Strategy selection on Cytosorbents Corporation options does not derive from any single metric in isolation. The volume & open interest view above sits inside a broader read: ATM IV currently sits at 21.2% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the volume & open interest data here with the volatility-skew surface, dealer-gamma exposure, max-pain level, and upcoming-events calendar to build a positioning thesis. Risk-defined structures (credit spreads, debit spreads, iron condors) are usually safer than naked positions while the regime is uncertain; the data on this page anchors the inputs but does not by itself constitute a trade thesis.
How to read the CTSO volume and OI data
The two-panel chart above splits Cytosorbents Corporation contract activity into volume (daily flow) and open interest (cumulative inventory) per strike. The per-strike grid table beneath gives the precise numbers for the densest 30 strikes. Current put/call ratio is 0.00, call-heavy - speculative or bullish positioning dominates. Total call OI of 78 versus put OI of 1 gives a put/call OI ratio of 0.01 - structurally a slower-moving signal than the volume-based ratio.
CTSO flow vs positioning
Volume tells you what flows happened today; OI tells you what positions accumulated. Both can move in opposite directions: rising volume with falling OI means contracts are being closed (covering); rising volume with rising OI means new positions are being opened. The combination matters more than either alone for reading sentiment. The per-strike grid distinguishes the strikes attracting flow today from the strikes carrying accumulated inventory - high volume at strikes that also carry high OI typically means rolling activity (closing front-month, opening longer-dated), high volume at low-OI strikes typically means fresh directional positioning. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.
Using CTSO OI/volume data alongside other surfaces
Per-strike OI is the input to dealer-gamma calculations: strikes with elevated call OI generate gamma walls that dealers must hedge into as spot approaches them. The gamma-exposure page combines this distribution with the dealers' assumed-long-gamma assumption to project hedge flow. Volume cross-checks recent positioning shifts in the chain that haven't yet shown up in cumulative OI. Pair both with the term-structure view on the volatility page to determine whether the activity is concentrated in near-dated event hedging or longer-dated structural positioning. Front-month expiration for CTSO sits at 20 days, so near-dated volume currently dominates the flow reading.
Learn how volume and open interest is reported and how to read the data →
Frequently asked CTSO volume & open interest questions
- What is the CTSO options turnover ratio?
- As of May 29, 2026, CTSO turnover ratio is 3.19 (252 contracts traded against 79 contracts outstanding). High churn indicates active position rotation rather than maintenance flow.
- Where is CTSO open interest concentrated?
- The OI distribution data is available in the per-strike chain table; concentration metrics for CTSO are not available in the current snapshot.
- Why does volume-open-interest matter for CTSO options?
- Volume tells you what is being traded today; open interest tells you what was already there. The combination separates opening flow (today's volume building new positions) from closing flow (today's volume unwinding existing ones), and locates the strikes that carry hedging-driven support or resistance based on dealer-gamma concentration.