Cohen & Steers, Inc. (CNS) Open Interest History
Open interest tracks the total number of outstanding options contracts. Rising OI alongside price moves can indicate growing commitment to the trend; declining OI suggests positions are being closed.
Cohen & Steers, Inc. (CNS) operates in the Financial Services sector, specifically the Asset Management industry, with a market capitalization near $4.03B, listed on NYSE, employing roughly 411 people, carrying a beta of 1.23 to the broader market. Cohen & Steers, Inc. Led by Joseph Martin Harvey, public since 2004-08-16.
Snapshot as of Jun 30, 2026.
- Spot Price
- $75.94
- Call OI
- 3.4K
- Put OI
- 254
- Total OI
- 3.6K
As of Jun 30, 2026, Cohen & Steers, Inc. (CNS) has 3.6K total contracts outstanding across all expirations. Put/call OI ratio is 0.08 (call-heavy positioning). Open interest reflects accumulated positions from prior sessions; persistent growth indicates sustained directional or hedging interest, while sharp drops typically mean post-expiration clean-up.
How CNS open interest history Data Feeds Strategy Selection
Strategy selection on Cohen & Steers, Inc. options does not derive from any single metric in isolation. The open interest history view above sits inside a broader read: ATM IV currently sits at 39.8% and dealer gamma exposure is positive, so dealer hedging is mechanically mean-reverting. Combine the open interest history 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 CNS open-interest data
The open-interest time-series above tracks the total Cohen & Steers, Inc. options inventory outstanding day by day. OI is a stock measure - the cumulative position count - so trends flag accumulating or distributing positioning. Total call OI of 3.4K versus put OI of 254 gives a put/call OI ratio of 0.08 - structurally a slower-moving signal than the volume-based ratio.
CNS 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. Combined with the current positive dealer-gamma regime, large OI clusters tend to act as price magnets through expiration cycles.
Using CNS 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 CNS sits at 17 days, so near-dated volume currently dominates the flow reading.
Learn how open interest is reported and how to read the data →
Daily open-interest history for CNS options over the last ~30 trading days. Each row reflects the end-of-day total OI summed across all listed strikes and expirations.
Most recent 15 trading days (descending). Older history appears in the chart above.
| Date | Call OI | Put OI | Total OI | P/C OI |
|---|---|---|---|---|
| Jun 30, 2026 | 3.4K | 254 | 3.6K | 0.08 |
| Jun 29, 2026 | 3.4K | 254 | 3.6K | 0.08 |
| Jun 26, 2026 | 3.0K | 254 | 3.2K | 0.09 |
| Jun 24, 2026 | 3.0K | 254 | 3.2K | 0.09 |
| Jun 23, 2026 | 3.0K | 254 | 3.2K | 0.09 |
| Jun 22, 2026 | 3.0K | 254 | 3.2K | 0.09 |
| Jun 18, 2026 | 4.7K | 303 | 5.0K | 0.06 |
| Jun 16, 2026 | 4.7K | 299 | 5.0K | 0.06 |
| Jun 15, 2026 | 4.7K | 299 | 5.0K | 0.06 |
| Jun 12, 2026 | 4.7K | 299 | 5.0K | 0.06 |
| Jun 11, 2026 | 4.7K | 298 | 5.0K | 0.06 |
| Jun 9, 2026 | 4.5K | 296 | 4.8K | 0.07 |
| Jun 8, 2026 | 3.4K | 295 | 3.7K | 0.09 |
| Jun 4, 2026 | 3.2K | 295 | 3.5K | 0.09 |
| Jun 3, 2026 | 3.0K | 293 | 3.3K | 0.10 |
CNS highest open-interest contracts
| Type | Strike | Expiration | Volume | OI | IV | Bid | Ask |
|---|---|---|---|---|---|---|---|
| CALL | $80.00 | Jul 17, 2026 | 0 | 2.3K | 37.9% | $0.05 | $2.15 |
Top 1 contracts from the institutional-grade nightly options scan; ranked by oi within the broader S&P 500/400/600 + ETF universe.
Frequently asked CNS open interest history questions
- What is the current CNS options open interest?
- As of Jun 30, 2026, Cohen & Steers, Inc. (CNS) has 3.6K total contracts outstanding across all listed expirations, split as 3.4K calls and 254 puts. Open interest reflects accumulated positions from prior trading sessions; it does not include today's volume until end-of-day reconciliation.
- What is the CNS put/call open interest ratio?
- Put/call OI ratio of 0.08 is call-heavy, often a directional bullish or upside-speculation signal.
- What does CNS open interest tell traders?
- Persistent OI growth indicates sustained directional or hedging interest; sharp drops typically mean post-expiration position cleanup. Heavy OI concentrations at specific strikes act as support and resistance levels because dealer hedging amplifies near those strikes - the gamma profile of the dealer book is concentrated there. Comparing today's volume to standing OI separates opening flow from closing flow.