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US10Y4.45-0.27%
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S&P 5007,500.58+1.08%
NASDAQ30,406.19+2.48%
DOW51,564.7+0.14%
VIX16.78+2.32%
US10Y4.45-0.27%
EUR/USD1.1506-0.93%
GOLD4,300.5-1.26%
WTI75.22-0.90%
BTC64,442.01-1.87%
Markets · Equities

ATS dealer leaderboard

Top 50 ATSs by 1-week off-exchange share volume. From FINRA's free Market Transparency weeklySummary (ATS_W_FIRM cut). MPID → firm names from ref/mpid_directory.csv where available; raw MPID shown otherwise.

Tier:AllTier 1Tier 2Window:1w4w13w
No ATS_W_FIRM rows yet. Runload_finra_otc_summary (or no rows for Tier 1 — S&P 500 / Russell 1000 / selected ETPs)
About this data
FINRA publishes one row per (week_ending, MPID, summaryTypeCode) for OTC and ATS trades that meet the share/$ thresholds. The MPID is a 4-character identifier assigned by FINRA; firm names are not in the public Query API (Registration data is members-only) so we use a manually-curated rolodex in ref/mpid_directory.csvto render friendly names for the ~50 firms we track. Open a PR to extend it.