Simplex Trading
PUBM icon

Simplex Trading’s PubMatic PUBM Stock Holding History

Simplex Trading’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 		$3.27K Sell
400
-17,700
-98% -$136K ﹤0.01% 8136
2025
Q4 		$161K Sell
18,100
-1,800
-9% -$15.7K ﹤0.01% 4460
2025
Q3 		$164K Sell
19,900
-32,900
-62% -$335K ﹤0.01% 5178
2025
Q2 		$656K Buy
52,800
+39,900
+309% +$421K ﹤0.01% 3222
2025
Q1 		$117K Buy
12,900
+3,300
+34% +$43.5K ﹤0.01% 4902
2024
Q4 		$141K Sell
9,600
-400
-4% -$6.2K ﹤0.01% 4857
2024
Q3 		$148K Sell
10,000
-1,400
-12% -$24.3K ﹤0.01% 4832
2024
Q2 		$231K Sell
11,400
-54,600
-83% -$1.22M ﹤0.01% 4526
2024
Q1 		$1.56M Buy
66,000
+36,500
+124% +$654K ﹤0.01% 2651
2023
Q4 		$481K Buy
29,500
+4,000
+16% +$58K ﹤0.01% 3747
2023
Q3 		$308K Sell
25,500
-8,700
-25% -$132K ﹤0.01% 3918
2023
Q2 		$625K Sell
34,200
-31,100
-48% -$494K ﹤0.01% 3080
2023
Q1 		$902K Sell
65,300
-10,600
-14% -$153K ﹤0.01% 2685
2022
Q4 		$972K Buy
75,900
+6,400
+9% +$100K ﹤0.01% 2489
2022
Q3 		$1.16M Buy
69,500
+23,900
+52% +$432K ﹤0.01% 2495
2022
Q2 		$724K Sell
45,600
-10,600
-19% -$227K ﹤0.01% 2996
2022
Q1 		$1.47M Sell
56,200
-3,600
-6% -$92.2K ﹤0.01% 2433
2021
Q4 		$2.04M Buy
59,800
+38,400
+179% +$1.25M ﹤0.01% 2033
2021
Q3 		$787K Buy
21,400
+300
+1% +$9K ﹤0.01% 3439
2021
Q2 		$824K Buy
+21,100
New +$878K ﹤0.01% 3411

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

Simplex Trading's PUBM Position: Q1 2026 in Review

Simplex Trading increased its PubMatic (PUBM) stake by 85% in Q1 2026, buying an estimated $74.3K and bringing the position to 20,989 shares worth $172K. The position accounts for ﹤0.01% of the portfolio, ranked #4475.

Simplex Trading first reported a position in PUBM in Q2 2021 and has held it in 13 quarters since. The position peaked at $975K in Q3 2022. 152 funds tracked by Wall St. Rank hold PUBM as of Q1 2026.

  • Simplex Trading held 20,989 shares of PubMatic worth $172K as of Q1 2026.
  • Simplex Trading bought 9,662 PubMatic shares in Q1 2026, an estimated $74.3K.
  • PubMatic made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #4475 holding.
  • Simplex Trading first reported a position in PubMatic in Q2 2021 and has held it in 13 quarters since.
  • Simplex Trading's PubMatic position peaked at $975K in Q3 2022.
  • 152 funds tracked by Wall St. Rank held PubMatic as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.