Jane Street
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Jane Street’s PubMatic PUBM Stock Holding History

Jane Street’s Portfolio PUBM Stock Details PUBM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.72M Buy
210,000
+3,226
+2% +$24.8K ﹤0.01% 5383
2025
Q4 		$1.83M Buy
206,774
+137,851
+200% +$1.2M ﹤0.01% 4974
2025
Q3 		$571K Sell
68,923
-103,947
-60% -$1.06M ﹤0.01% 7574
2025
Q2 		$2.15M Buy
172,870
+63,447
+58% +$669K ﹤0.01% 4306
2025
Q1 		$1M Buy
109,423
+21,824
+25% +$288K ﹤0.01% 5574
2024
Q4 		$1.29M Buy
87,599
+46,709
+114% +$724K ﹤0.01% 4923
2024
Q3 		$608K Sell
40,890
-46,136
-53% -$801K ﹤0.01% 6849
2024
Q2 		$1.77M Buy
87,026
+45,009
+107% +$1M ﹤0.01% 4708
2024
Q1 		$997K Sell
42,017
-70,557
-63% -$1.26M ﹤0.01% 5420
2023
Q4 		$1.84M Sell
112,574
-120,252
-52% -$1.74M ﹤0.01% 4475
2023
Q3 		$2.82M Buy
232,826
+165,639
+247% +$2.52M ﹤0.01% 3470
2023
Q2 		$1.23M Buy
67,187
+43,683
+186% +$695K ﹤0.01% 4882
2023
Q1 		$325K Sell
23,504
-5,896
-20% -$85.1K ﹤0.01% 7061
2022
Q4 		$377K Sell
29,400
-8,607
-23% -$135K ﹤0.01% 6632
2022
Q3 		$632K Sell
38,007
-83,266
-69% -$1.51M ﹤0.01% 6248
2022
Q2 		$1.93M Buy
121,273
+16,287
+16% +$349K ﹤0.01% 4237
2022
Q1 		$2.74M Buy
104,986
+58,247
+125% +$1.49M ﹤0.01% 4142
2021
Q4 		$1.59M Buy
46,739
+26,391
+130% +$860K ﹤0.01% 4945
2021
Q3 		$536K Buy
20,348
+9,564
+89% +$287K ﹤0.01% 7156
2021
Q2 		$421K Buy
+10,784
New +$449K ﹤0.01% 7556
2021
Q1 		– Sell
-31,255
Closed -$874K – 9490
2020
Q4 		$874K Buy
+31,255
New +$854K ﹤0.01% 4876

Other funds holding PUBM

GHC
Graham Holdings Company Arlington, Virginia $967M AUM 15.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
CP
CenterBook Partners Greenwich, Connecticut $1.86B AUM 24.52% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Jacobs Levy Equity Management
Jacobs Levy Equity Management Florham Park, New Jersey $23.8B AUM 25.4% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Jane Street's PUBM Position: Q1 2026 in Review

Jane Street increased its PubMatic (PUBM) stake by 1.6% in Q1 2026, buying an estimated $24.8K and bringing the position to 210,000 shares worth $1.72M. The position accounts for ﹤0.01% of the portfolio, ranked #5383.

Jane Street first reported a position in PUBM in Q4 2020 and has held it in 21 quarters since. The position peaked at $2.82M in Q3 2023. 153 funds tracked by Wall St. Rank hold PUBM as of Q1 2026.

  • Jane Street held 210,000 shares of PubMatic worth $1.72M as of Q1 2026.
  • Jane Street bought 3,226 PubMatic shares in Q1 2026, an estimated $24.8K.
  • PubMatic made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #5383 holding.
  • Jane Street first reported a position in PubMatic in Q4 2020 and has held it in 21 quarters since.
  • Jane Street's PubMatic position peaked at $2.82M in Q3 2023.
  • 153 funds tracked by Wall St. Rank held PubMatic as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.