Skip to main content

Simplex Trading, LLC

SEC CIK
0001488542
Latest filing
Aug 12, 2026

MGNI holding history

Magnite, Inc. in every 13F filed by Simplex Trading, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MGNI overviewAll 13F holders of MGNIFull Q2 2026 holdings

Shares (Q2 2026)
0
Sold out in Q2 2026
Value
$0
% of portfolio
0.0%
Quarters held
14
Since Q1 2021
Holdings of MGNI by Simplex Trading, LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 20260$00.0%−11,316−100.0%Sold outHolders
Q1 202611,316$134.4K<0.1%−252,046−95.7%ReducedHolders
Q4 2025263,362$4.27M0.1%+146,317+125.0%AddedHolders
Q3 2025117,045$2.55M0.1%+64,211+121.5%AddedHolders
Q2 202552,834$1.27M<0.1%+52,834NewHolders
Q1 20250$00.0%−31,987−100.0%Sold outHolders
Q4 202431,987$509.0K<0.1%−56,172−63.7%ReducedHolders
Q3 202488,159$1.22M<0.1%+80,635+1,071.7%AddedHolders
Q2 20247,524$99.0K<0.1%+7,524NewHolders
Q3 20230$00.0%−24,057−100.0%Sold outHolders
Q2 202324,057$328.0K<0.1%+12,330+105.1%AddedHolders
Q1 202311,727$108.0K<0.1%−27,701−70.3%ReducedHolders
Q4 202239,428$417.0K<0.1%+39,428NewHolders
Q3 20220$00.0%−30,590−100.0%Sold outHolders
Q2 202230,590$271.0K<0.1%−27,180−47.0%ReducedHolders
Q1 202257,770$763.0K<0.1%−17,703−23.5%ReducedHolders
Q4 202175,473$1.32M<0.1%+75,473NewHolders
Q2 20210$00.0%−49,469−100.0%Sold outHolders
Q1 202149,469$2.06M0.1%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.