BIII Market Structure
Black Spade Acquisition III Co (BIII) operates in the Financial Services sector, specifically the Shell Companies industry, with a market capitalization near $232.4M, listed on NYSE, employing roughly 3 people, carrying a beta of 0.09 to the broader market. Black Spade Acquisition III Co's primary objective is to complete a significant business transaction such as a merger, a swap of shares, the purchase of assets, an acquisition of stock, a corporate restructuring, or a comparable deal involving one or more companies or their property. Led by Chi-Wai Tam, public since 2026-01-29.
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
- 2026-06-08
- Weekly OTC Shares
- 64
- Weekly OTC Trades
- 7
- 12-Week Total Shares
- 802.7K
- Avg Trade Size (12-Week)
- 9.0K 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 BIII'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 Black Spade Acquisition III Co.
Learn how market structure is reported and how to read the data →
Frequently asked BIII market structure questions
- What is the current BIII off-exchange volume?
- For the week ending Jun 8, 2026, Black Spade Acquisition III Co (BIII) recorded 64 shares across 7 trades (average trade size 9 shares). The 12-week cumulative total is 802.7K shares.
- What does BIII 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 BIII 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.