XT
PUBM icon

XTX Topco’s PubMatic PUBM Stock Holding History

XTX Topco’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 		$560K Buy
68,458
+45,990
+205% +$354K 0.01% 1933
2025
Q4 		$199K Buy
+22,468
New +$196K 0.01% 2405
2025
Q1 		– Sell
-15,510
Closed -$228K – 2963
2024
Q4 		$228K Buy
+15,510
New +$240K 0.02% 1450
2024
Q1 		– Sell
-20,618
Closed -$336K – 2223
2023
Q4 		$336K Buy
+20,618
New +$299K 0.07% 535

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

XTX Topco's PUBM Position: Q1 2026 in Review

XTX Topco increased its PubMatic (PUBM) stake by 205% in Q1 2026, buying an estimated $354K and bringing the position to 68,458 shares worth $560K. The position accounts for 0.01% of the portfolio, ranked #1933.

XTX Topco first reported a position in PUBM in Q4 2023 and has held it in 4 quarters since. 152 funds tracked by Wall St. Rank hold PUBM as of Q1 2026.

  • XTX Topco held 68,458 shares of PubMatic worth $560K as of Q1 2026.
  • XTX Topco bought 45,990 PubMatic shares in Q1 2026, an estimated $354K.
  • PubMatic made up 0.01% of XTX Topco's portfolio in Q1 2026, its #1933 holding.
  • XTX Topco first reported a position in PubMatic in Q4 2023 and has held it in 4 quarters since.
  • 152 funds tracked by Wall St. Rank held PubMatic as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.