AMBR — AMBER RD INC

Ownership history in SIMPLEX TRADING, LLC  ·  9 quarters on record

This page tracks every 13F SEC filing in which SIMPLEX TRADING, LLC reported a position in AMBER RD INC (AMBR). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 19,412 +14,108 +266.0% 0.00% $34K $1.73
2025 Q2 ADDED 5,304 +4,449 +520.4% 0.00% $58K $11.03
2025 Q1 REDUCED 855 -934 -52.2% 0.00% $10K $11.98
2024 Q4 ADDED 1,789 +1,189 +198.2% 0.00% $16K $9.36
5 older quarters hidden  —  Sign in free or upgrade to Premium to see full history
% of Fund (quarterly)    AMBR price (monthly, adj. close)

Other funds also holding AMBR

As of 2025 Q4 — sorted by position size

Pantera Capital Partners LP 0.07% XTX Topco Ltd 3Y 0.0% MILLENNIUM MANAGEMENT LLC 3Y 7Y 0.0% MARSHALL WACE, LLP 3Y 7Y 0.0% TWO SIGMA INVESTMENTS, LP 3Y 7Y 0.0% CITADEL ADVISORS LLC 3Y 7Y 0.0% SUSQUEHANNA INTERNATIONAL GROUP, LLP 3Y 7Y 0.0% Tower Research Capital LLC (TRC) 3Y 7Y 0.0% MORGAN STANLEY 3Y 7Y 0.0% UBS Group AG 3Y 7Y 0.0%
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