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Mediaalpha Inc
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12.380USD
-1.165-8.60%
Close 07-31 16:00（ET）Quotes delayed by 15 min
758.89MMarket Cap
17.79P/E TTM
Shareholding Stats
Updated: Sun, May 10
Updated: Sun, May 10
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
White Mountains Insurance Group Ltd
33.03%
BlackRock Institutional Trust Company, N.A.
5.01%
Nonko (Eugene)
3.39%
Yi (Steven)
3.21%
Vanguard Capital Management, LLC
2.56%
Other
52.79%
Shareholders
Shareholders
Proportion
White Mountains Insurance Group Ltd
33.03%
BlackRock Institutional Trust Company, N.A.
5.01%
Nonko (Eugene)
3.39%
Yi (Steven)
3.21%
Vanguard Capital Management, LLC
2.56%
Other
52.79%
Shareholder Types
Shareholders
Proportion
Holding Company
33.03%
Investment Advisor/Hedge Fund
20.04%
Investment Advisor
18.07%
Hedge Fund
14.01%
Individual Investor
10.52%
Research Firm
4.29%
Pension Fund
0.81%
Bank and Trust
0.24%
Venture Capital
0.17%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
396
33.71M
62.36%
-7.85M
2025Q4
381
30.60M
53.82%
-10.04M
2025Q3
356
31.02M
54.55%
-8.60M
2025Q2
356
52.71M
93.80%
-8.40M
2025Q1
359
54.07M
96.74%
-7.49M
2024Q4
349
52.98M
95.57%
-5.94M
2024Q3
329
53.73M
97.54%
-835.53K
2024Q2
310
55.46M
101.78%
+9.30M
2024Q1
277
49.42M
97.14%
-996.42K
2023Q4
258
46.83M
98.87%
-4.19M
View more
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
White Mountains Insurance Group Ltd
17.86M
32.37%
--
--
Mar 11, 2026
BlackRock Institutional Trust Company, N.A.
2.71M
4.91%
-2.71K
-0.10%
Dec 31, 2025
Nonko (Eugene)
1.93M
3.5%
-113.68K
-5.56%
Mar 17, 2026
Yi (Steven)
2.35M
4.26%
+574.48K
+32.37%
Mar 25, 2026
Clearline Capital LP
1.30M
2.36%
+10.60K
+0.82%
Dec 31, 2025
Renaissance Technologies LLC
1.05M
1.89%
+100.30K
+10.61%
Dec 31, 2025
Arrowstreet Capital, Limited Partnership
855.90K
1.55%
+335.45K
+64.45%
Dec 31, 2025
Divisadero Street Capital Management, LP
849.01K
1.54%
+762.10K
+876.92%
Dec 31, 2025
AQR Capital Management, LLC
804.10K
1.46%
+33.42K
+4.34%
Dec 31, 2025
View more
Related ETFs
Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
JPMorgan Active Small Cap Value ETF
1.27%
Janus Henderson Small/Mid Cap Growth Alpha ETF
0.68%
Royce Quant Small-Cap Quality Value ETF
0.23%
JPMorgan Fundamental Data Science Small Core ETF
0.21%
VictoryShares Small Cap Free Cash Flow ETF
0.11%
iShares Micro-Cap ETF
0.08%
Goldman Sachs ActiveBeta US Small Cap Equity ETF
0.07%
Pacer US Small Cap Cash Cows ETF
0.07%
Principal U.S. Small-Cap ETF
0.04%
WisdomTree US SmallCap Fund
0.03%
View more
JPMorgan Active Small Cap Value ETF
Proportion1.27%
Janus Henderson Small/Mid Cap Growth Alpha ETF
Proportion0.68%
Royce Quant Small-Cap Quality Value ETF
Proportion0.23%
JPMorgan Fundamental Data Science Small Core ETF
Proportion0.21%
VictoryShares Small Cap Free Cash Flow ETF
Proportion0.11%
iShares Micro-Cap ETF
Proportion0.08%
Goldman Sachs ActiveBeta US Small Cap Equity ETF
Proportion0.07%
Pacer US Small Cap Cash Cows ETF
Proportion0.07%
Principal U.S. Small-Cap ETF
Proportion0.04%
WisdomTree US SmallCap Fund
Proportion0.03%