CTMX Market Structure
CytomX Therapeutics, Inc. (CTMX) operates in the Healthcare sector, specifically the Biotechnology industry, with a market capitalization near $546.8M, listed on NASDAQ, employing roughly 119 people, carrying a beta of 2.09 to the broader market. CytomX Therapeutics, Inc. Led by Sean A. McCarthy, public since 2015-10-08.
Market structure data reveals where a stock trades across exchanges, dark pools, and alternative trading systems. Understanding off-exchange activity helps identify institutional trading patterns and liquidity dynamics.
- Latest Week Ending
- 2026-05-25
- Weekly OTC Shares
- 3.1M
- Weekly OTC Trades
- 4.2K
- 12-Week Total Shares
- 133.5M
- Avg Trade Size (12-Week)
- 439 shares
How Single-Name Off-Exchange Volume Affects Options
For single-name equities, persistent off-exchange volume concentrations can flag institutional positioning - large blocks arranged through ATS venues to avoid lit-market impact, or correlation-arbitrage flow from sector rotation. The flow doesn't directly move the lit-market price (it prints at the ATS) but it changes the inventory position of the institutional counterparty, which then drives subsequent lit-market flow. Compare the off-exchange volume series above with CTMX's gamma exposure and options volume history to see whether unusual dark-pool activity coincides with rebalancing in the options book.
Showing 12 weeks of off-exchange trading data for CytomX Therapeutics, Inc..
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Frequently asked CTMX market structure questions
- What is the current CTMX off-exchange volume?
- For the week ending May 25, 2026, CytomX Therapeutics, Inc. (CTMX) recorded 3.1M shares across 4.2K trades (average trade size 726 shares). The 12-week cumulative total is 133.5M shares.
- What does CTMX off-exchange volume mean for traders?
- Off-exchange volume on a single-name equity reflects institutional block trades arranged through alternative trading systems (ATS) for liquidity rather than information reasons. Persistent ATS volume on a name can signal large institutional repositioning; the lit-market price impact lags the off-exchange print by hours to days as the institutional counterparty hedges or unwinds.
- How is CTMX market-structure data sourced?
- Weekly off-exchange volume figures come from FINRA's OTC Transparency reporting, which captures trades executed through FINRA-member off-exchange venues including ATSs and member firm internalization desks. FINRA publishes the data with a two-week lag (current-week-minus-two-weeks) for ATS-specific volume and weekly aggregate volume; the totals here aggregate all member firm reporting. Trades cleared via the listed-exchange auction are NOT included; the figure reflects only the off-exchange portion of total volume.