Renaissance Technologies (RenTech)'s PUBM Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 1.54 M shares of PubMatic, Inc. (PUBM) worth $12.6 M, representing 0.02% of the portfolio. First purchased in 2021-Q4, this medium-term investment has been held for 18 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in PUBM, demonstrating sustained confidence in this investment. Largest addition occurred in Q1 2026, adding 321,200 shares. Largest reduction occurred in Q4 2025, reducing 136,267 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s PubMatic (PUBM) Holding Value Over Time
Track share changes against reported price movement
Quarterly PubMatic (PUBM) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +321,200 | Add 26.34% | 1.54 M | $8.18 |
| Q4 2025 | -136,267 | Reduce 10.05% | 1.22 M | $8.87 |
| Q3 2025 | +135,700 | Add 11.12% | 1.36 M | $8.28 |
| Q2 2025 | +123,400 | Add 11.25% | 1.22 M | $12.44 |
| Q1 2025 | +33,000 | Add 3.10% | 1.1 M | $9.14 |
| Q4 2024 | -30,100 | Reduce 2.75% | 1.06 M | $14.69 |
| Q3 2024 | -95,100 | Reduce 8.00% | 1.09 M | $14.87 |
| Q2 2024 | +265,700 | Add 28.79% | 1.19 M | $20.31 |
| Q1 2024 | +108,200 | Add 13.28% | 923,000 | $23.72 |
| Q4 2023 | +43,600 | Add 5.65% | 814,800 | $16.31 |
| Q3 2023 | +2,700 | Add 0.35% | 771,200 | $12.10 |
| Q2 2023 | -83,800 | Reduce 9.83% | 768,500 | $0.02 |
| Q1 2023 | +79,852 | Add 10.34% | 852,300 | $0.01 |
| Q4 2022 | +18,348 | Add 2.43% | 772,448 | $0.01 |
| Q3 2022 | -13,400 | Reduce 1.75% | 754,100 | $16.63 |
| Q2 2022 | -9,400 | Reduce 1.21% | 767,500 | $15.89 |
| Q1 2022 | +96,346 | Add 14.16% | 776,900 | $26.12 |
| Q4 2021 | +680,554 | New Buy | 680,554 | $34.05 |
Renaissance Technologies (RenTech)'s PubMatic Investment FAQs
Renaissance Technologies (RenTech) first purchased PubMatic, Inc. (PUBM) in Q4 2021, acquiring 680,554 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held PubMatic, Inc. (PUBM) for 18 quarters since Q4 2021.
Renaissance Technologies (RenTech)'s largest addition to PubMatic, Inc. (PUBM) was in Q4 2021, adding 680,554 shares worth $23.17 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 1,540,533 shares of PubMatic, Inc. (PUBM), valued at approximately $12.6 M.
As of the Q1 2026 filing, PubMatic, Inc. (PUBM) represents approximately 0.02% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in PubMatic, Inc. (PUBM) was 1,540,533 shares, as reported at the end of Q1 2026.