Mediaalpha Inc

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Mediaalpha Inc
TickerMAX
CIK #0001818383
CUSIP58450V104
SectorFinance - Insurance Carriers, Nec
Address700 South Flower Street Suite 640, Los Angeles, CA 90017
Source [EDGAR]
CIK Filing 2011 - 2025
[0001818383] 10-K
[0001818383] 10-Q
[0001818383] 3
[0001818383] 4
[0001818383] 8-K
[0001818383] SC 13D
[0001818383] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
BlackRock Inc Mediaalpha Inc [2024-11-12] 6.9
BlackRock Inc Mediaalpha Inc [2024-10-22] 6.9
White Mountains Insurance Group Ltd Mediaalpha Inc [2023-06-30] 49.9
White Mountains Insurance Group Ltd Mediaalpha Inc [2023-02-10] 39.3
Ararat Capital Management LP Mediaalpha Inc [2022-06-06] 5.1
Broad Bay Capital Management LP Mediaalpha Inc [2022-05-20] 5.6
Vanguard Group Inc Mediaalpha Inc [2022-02-10] 5.06
Nonko Eugene Mediaalpha Inc [2021-06-25] 10.1
Wang Ambrose Mediaalpha Inc [2021-06-25] 6.9
YI Steven Mediaalpha Inc [2021-06-25] 0.2
White Mountains Insurance Group Ltd Mediaalpha Inc [2021-02-12] 61.9
Insignia Capital Partners GP LLC Mediaalpha Inc [2021-02-12] 24.3
Kayne Anderson Rudnick Investment Management LLC Mediaalpha Inc [2020-11-10] 13.53
Form 3/4/5 Filer 2011 - 2025
MediaAlpha, Inc.
Yeh Kuanling Amy
Nonko Eugene
Thompson Patrick Ryan
Coyne Jeffrey B
Yi Steven
Cramer Keith
Vrabeck Kathy P
Hunt Bradley William
Arasu Venmal (Raji)
Sweet Lara
Insignia A QL Holdings LLC
Insignia Capital Partners (Parallel A), L.P.
Insignia Capital Partners, L.P.
Insignia QL Holdings LLC
Insignia Capital Partners GP LLC
Insignia Capital Partners AIV LP
WM Hinson (Bermuda) Ltd.
White Mountains Insurance Group Ltd
Cunningham Catherine Hull
WM Birkdale, Ltd.
WM International Holdings Ltd
Bridge Holdings (Bermuda) Ltd.
Carlson Cort Allan
Sweetser Jeff
Mikalis Brian
Perine Robert
Topjian Serge
Sinanyan Tigran
Wang Ambrose
Martinez Lance
Broglio Anthony
Delehanty Christopher John
Lowe David L
Moyer Jennifer L
Form 13F Holdings
Firm Period DFND Voting Shares
White Mountains Insurance Group Ltd [2025-06-30] SOLE 17,856,614 17,856,614
BlackRock, Inc. [2025-06-30] SOLE 3,754,446 4,003,419
Vanguard Group Inc [2025-06-30] SOLE 0 2,790,091
Broad Bay Capital Management LP [2025-06-30] SOLE 2,498,507 2,498,507
Goldman Sachs Group Inc [2025-06-30] DFND 2,007,106 2,007,186
Clearline Capital LP [2025-06-30] SOLE 1,425,308 1,425,308
Nuveen, LLC [2025-06-30] DFND 870,475 900,790
D. E. Shaw & Co., Inc. [2025-06-30] DFND 895,348 895,348
Jacobs Asset Management LLC [2025-06-30] SOLE 798,666 798,666
Renaissance Technologies LLC [2025-06-30] SOLE 772,300 772,300
Geode Capital Management LLC [2025-06-30] DFND 764,702 764,702
Morgan Stanley [2025-06-30] DFND 727,386 755,926
Shay Capital LLC [2025-06-30] SOLE 670,000 670,000
State Street Corp [2025-06-30] DFND 614,792 652,838
Janus Henderson Group PLC [2025-06-30] DFND 0 632,888
AQR Capital Management LLC [2025-06-30] DFND 555,054 585,534
JPMorgan Chase & Co [2025-06-30] DFND 526,292 542,246
UBS Group AG [2025-06-30] DFND 528,380 528,380
Qube Research & Technologies Ltd [2025-06-30] SOLE 526,349 526,349
Arrowstreet Capital Limited Partnership [2025-06-30] DFND 484,342 484,342
Jacobs Levy Equity Management Inc [2025-06-30] SOLE 456,951 469,561
Hillsdale Investment Management Inc [2025-06-30] SOLE 359,200 359,200
Pacer Advisors Inc [2025-06-30] SOLE 333,958 333,958
Charles Schwab Investment Management Inc [2025-06-30] SOLE 311,591 311,591
Northern Trust Corp [2025-06-30] DFND 272,135 272,809
Earnest Partners LLC [2025-06-30] SOLE 59,547 269,607
Bank of America Corp /DE/ [2025-06-30] DFND 5,950 225,789
Millennium Management LLC [2025-06-30] SOLE 183,063 183,063
J Goldman & Co LP [2025-06-30] SOLE 175,000 175,000
Marshall Wace LLP [2025-06-30] OTR 0 165,627
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