Janus Henderson Group
PUBM icon

Janus Henderson Group’s PubMatic PUBM Stock Holding History

Janus Henderson Group’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
2025
Q4 		– Sell
-22,198
Closed -$184K – 2460
2025
Q3 		$184K Hold
22,198
– – ﹤0.01% 2356
2025
Q2 		$276K Hold
22,198
– – ﹤0.01% 2199
2025
Q1 		$206K Hold
22,198
– – ﹤0.01% 2352
2024
Q4 		$326K Hold
22,198
– – ﹤0.01% 2217
2024
Q3 		$330K Hold
22,198
– – ﹤0.01% 2213
2024
Q2 		$451K Sell
22,198
-207
-0.9% -$4.61K ﹤0.01% 2040
2024
Q1 		$531K Sell
22,405
-41,186
-65% -$738K ﹤0.01% 1977
2023
Q4 		$1.04M Buy
63,591
+1,353
+2% +$19.6K ﹤0.01% 1596
2023
Q3 		$753K Buy
62,238
+1,483
+2% +$22.6K ﹤0.01% 1710
2023
Q2 		$1.11M Buy
60,755
+15,488
+34% +$246K ﹤0.01% 1557
2023
Q1 		$625K Buy
45,267
+21,283
+89% +$307K ﹤0.01% 1889
2022
Q4 		$307K Sell
23,984
-26,496
-52% -$415K ﹤0.01% 1964
2022
Q3 		$838K Buy
50,480
+24,343
+93% +$440K ﹤0.01% 1732
2022
Q2 		$415K Buy
26,137
+8,357
+47% +$179K ﹤0.01% 1876
2022
Q1 		$464K Buy
+17,780
New +$456K ﹤0.01% 1966

Other funds holding PUBM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
GHC
Graham Holdings Company Arlington, Virginia $967M AUM 15.12% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
CP
CenterBook Partners Greenwich, Connecticut $1.86B AUM 24.52% 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
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Janus Henderson Group's PUBM Position: Q4 2025 in Review

Janus Henderson Group sold out of PubMatic (PUBM) in Q4 2025, closing a stake of 22,198 shares — an estimated $184K sold.

Janus Henderson Group first reported a position in PUBM in Q1 2022 and held it in 15 quarters. The position peaked at $1.11M in Q2 2023. 152 funds tracked by Wall St. Rank hold PUBM as of Q4 2025.

  • Janus Henderson Group reported no remaining PubMatic position as of Q4 2025 after selling out during the quarter.
  • Janus Henderson Group sold 22,198 PubMatic shares in Q4 2025, an estimated $184K.
  • Janus Henderson Group first reported a position in PubMatic in Q1 2022 and held it in 15 quarters.
  • Janus Henderson Group's PubMatic position peaked at $1.11M in Q2 2023.
  • 152 funds tracked by Wall St. Rank held PubMatic as of Q4 2025.

Based on Janus Henderson Group's 13F filing for Q4 2025, filed 17 Feb 2026.