ABN AMRO Clearing USA LLC (Dutch — Algemene Bank Nederland, Amsterdamsche en Rotterdamsche Bank)
ATM Execution LLC (Algorithmic Trading Management … Cowen)
Aegis Capital Corp.
Alpha Trading L.P. (HERZLIYA PITUACH, 4672528 ISRAEL)
Alpine Securities Corporation
Apex Clearing Corporation
Archipelago Securities L.L.C.
Axos Clearing LLC
BGC Financial, L.P. (Bernard Gerald Cantor?) (Howard Lutnick)
BMO Capital Markets Corp. (Bank of Montreal)
BNP Paribas Securities Corp. (Banque Nationale de Paris)
BTIG, LLC (Baypoint Trading International Group?)
Banyan Securities, LLC
Barclays Capital Inc.
Bay Crest Partners, LLC (Kazahkstan, Freedom Holding Corp., Timur Turlov)
Belvedere Trading LLC
Bernstein Institutional Services LLC
Bluefin Capital Management, LLC
BofA Securities, Inc. (Bank of America)
Bolt-X LLC
C&C Trading, L.L.C. (Robert Cohen and Robert Cocchi)
CBOE Trading, Inc. (Chicago Board Options Exchange)
CF Global Trading, LLC (Scott Chace and Robert Fleming … CF)
CIBC World Markets Corp. (Canadian Imperial Bank of Commerce)
CLSA Americas, LLC (Credit Lyonnais Securities Asia)
CODA Markets, Inc.
Canaccord Genuity LLC
Cantor Fitzgerald & Co.
Capital Institutional Services, Inc.
Citadel Securities LLC
Citigroup Global Markets Inc.
Clear Street LLC
Clear Street Markets LLC
Clearpool Execution Services, LLC
Consolidated Trading LLC
Cowen and Company, LLC
Credit Suisse Securities (USA) LLC
DRW Execution Services, LLC (Donald R. Wilson)
DRW Securities, LLC (Donald R. Wilson)
Daiwa Capital Markets America Inc.
Dash Financial Technologies LLC
DriveWealth Institutional LLC
First Manhattan Securities LLC
Flow Traders U.S. LLC (Dutch)
Fred Alger & Company, LLC
G1 Execution Services, LLC
GFI Securities LLC (Division of BGC, see above)
GTS Securities LLC (Ari Rubenstein)
Glendale Securities, Inc.
Global Execution Brokers, LP (Susquehanna International Group)
Goldman Sachs & Co. LLC
HAP Trading, LLC (Harsh A. Padia)
HRT Execution Services LLC (Hudson River Trading)
HRT Financial LP (Hudson River Trading)
HSBC Securities (USA) Inc. (Hongkong Shanghai Banking Corporation)
IEX Services LLC (Investors Exchange)
IMC Chicago, LLC (Dutch — International Marketmaker’s Combination)
Industrial and Commercial Bank of China Financial Services LLC
Instinet, LLC
Interactive Brokers LLC
J.P. Morgan Securities LLC
Jane Street Capital, LLC
Jane Street Execution Services, LLC
Jefferies LLC
Jump Execution, LLC
Jump Trading, LLC
Kershner Securities, LLC
Ladenburg Thalmann & Co. Inc.
Latour Trading LLC (Tower Research Capital)
Leerink Partners LLC
Lightspeed Financial Services Group LLC
Lime Trading Corp.
Maxim Group LLC
Mirae Asset Securities (USA) Inc. (Korea)
Monness Crespi Hardt & Co., Inc.
Moors & Cabot, Inc.
Morgan Stanley & Co. LLC
Nasdaq Execution Services, LLC
National Financial Services LLC (Fidelity Management & Research, Boston)
Needham & Company, LLC
Old Mission Capital, LLC
Oppenheimer & Co. Inc.
Oscar Gruss & Son Incorporated
Peak6 Capital Management LLC
Pershing LLC
Piper Sandler & Co.
Puma Capital, LLC
Pundion LLC (Istra LLC)
Quantlab Brokerage, LLC
RBC CMA LLC (Royal Bank of Canada)
RBC Capital Markets, LLC (Royal Bank of Canada)
RQD* Clearing, LLC (RQD apparently means “required” … dumb name, geez)
Roth Capital Partners, LLC
SG Americas Securities, LLC (France — Societe Generale)
SMBC Nikko Securities America, Inc. (Japan — Sumitomo Mitsui Banking Corporation)
Safra Securities LLC (Joseph Safra)
SageTrader, LLC
Sanford C. Bernstein & Co., LLC
Scotia Capital (USA) Inc. (Canada)
SpeedRoute LLC
SpeedTrader, Inc.
Sumo Capital, LLC
Susquehanna Financial Group, LLP
Susquehanna Investment Group
Susquehanna Securities, LLC
TJM Investments, LLC (broken website)
TRC Markets LLC (Tower Research Capital)
Telsey Advisory Group LLC
ThinkEquity LLC
Tower Principal Markets LLC
TradePro Securities, Inc.
TradeStation Securities, Inc.
TradeUp Securities, Inc. (China — UP Fintech Holding Limited, $TIGR)
TradeZero America, Inc.
Tradebot Systems, Inc. (Dave Cummings)
Triad Securities Corp
Tudor, Pickering, Holt & Co. Securities, Inc.
Two Sigma Securities, LLC
UBS Financial Services Inc.
UBS Securities LLC
Velocity Clearing, LLC
Velox Clearing LLC
ViewTrade Securities, Inc.
Virtu Americas LLC
Vision Financial Markets LLC
Wall Street Access (Denis P. Kelleher)
Webull Financial LLC
Wedbush Securities Inc.
Wells Fargo Securities, LLC
William O'Neil Securities
Williams Trading, LLC (David Williams)
Wilson-Davis & Co., Inc.
Wolverine Execution Services, LLC
Wolverine Trading, LLC
XR Securities LLC
XTX Markets LLC