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Headlands Technologies’s Puma Biotechnology PBYI Stock Holding History

Headlands Technologies’s Portfolio PBYI Stock Details PBYI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-15,976
Closed -$95.1K – 911
2025
Q4 		$95.1K Sell
15,976
-13,198
-45% -$70.1K 0.01% 633
2025
Q3 		$155K Buy
29,174
+27,636
+1,797% +$117K 0.01% 556
2025
Q2 		$5.28K Buy
1,538
+321
+26% +$1.02K ﹤0.01% 1060
2025
Q1 		$3.6K Buy
+1,217
New +$3.81K ﹤0.01% 1018
2024
Q2 		– Sell
-2,301
Closed -$12.2K – 1496
2024
Q1 		$12.2K Buy
+2,301
New +$12.4K ﹤0.01% 1000
2023
Q4 		– Sell
-192
Closed -$505 – 1215
2023
Q3 		$505 Buy
+192
New +$654 ﹤0.01% 871

Other funds holding PBYI

ACA
Acorn Capital Advisors New York $366M AUM 474.6% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return

Headlands Technologies's PBYI Position: Q1 2026 in Review

Headlands Technologies sold out of Puma Biotechnology (PBYI) in Q1 2026, closing a stake of 15,976 shares — an estimated $95.1K sold.

Headlands Technologies first reported a position in PBYI in Q3 2023 and held it in 6 quarters. The position peaked at $155K in Q3 2025. 157 funds tracked by Wall St. Rank hold PBYI as of Q1 2026.

  • Headlands Technologies reported no remaining Puma Biotechnology position as of Q1 2026 after selling out during the quarter.
  • Headlands Technologies sold 15,976 Puma Biotechnology shares in Q1 2026, an estimated $95.1K.
  • Headlands Technologies first reported a position in Puma Biotechnology in Q3 2023 and held it in 6 quarters.
  • Headlands Technologies's Puma Biotechnology position peaked at $155K in Q3 2025.
  • 157 funds tracked by Wall St. Rank held Puma Biotechnology as of Q1 2026.

Based on Headlands Technologies's 13F filing for Q1 2026, filed 13 May 2026.