Simplex Trading
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Simplex Trading’s Puma Biotechnology PBYI Stock Holding History

Simplex Trading’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
Q2 		$39.7K Sell
4,900
-5,300
-52% -$38.8K ﹤0.01% 6516
2026
Q1 		$65.2K Sell
10,200
-500
-5% -$3.22K ﹤0.01% 5568
2025
Q4 		$63.7K Sell
10,700
-6,500
-38% -$34.5K ﹤0.01% 5436
2025
Q3 		$91K Buy
17,200
+10,700
+165% +$45.4K ﹤0.01% 5855
2025
Q2 		$22K Buy
6,500
+2,600
+67% +$8.3K ﹤0.01% 6698
2025
Q1 		$11K Sell
3,900
-9,000
-70% -$28.2K ﹤0.01% 7046
2024
Q4 		$39K Sell
12,900
-600
-4% -$1.75K ﹤0.01% 6128
2024
Q3 		$34K Buy
13,500
+10,100
+297% +$30.6K ﹤0.01% 6235
2024
Q2 		$11K Sell
3,400
-3,900
-53% -$17.1K ﹤0.01% 7374
2024
Q1 		$38K Buy
7,300
+100
+1% +$539 ﹤0.01% 6528
2023
Q4 		$31K Buy
7,200
+5,000
+227% +$16.6K ﹤0.01% 6540
2023
Q3 		$5K Sell
2,200
-21,100
-91% -$71.9K ﹤0.01% 7676
2023
Q2 		$82K Sell
23,300
-27,000
-54% -$84.2K ﹤0.01% 5317
2023
Q1 		$155K Sell
50,300
-13,800
-22% -$52K ﹤0.01% 4626
2022
Q4 		$271K Sell
64,100
-62,200
-49% -$215K ﹤0.01% 3864
2022
Q3 		$299K Buy
126,300
+97,700
+342% +$285K ﹤0.01% 4085
2022
Q2 		$81K Buy
28,600
+9,700
+51% +$24.1K ﹤0.01% 5852
2022
Q1 		$54K Sell
18,900
-800
-4% -$2.07K ﹤0.01% 7027
2021
Q4 		$59K Buy
19,700
+11,000
+126% +$47.7K ﹤0.01% 7037
2021
Q3 		$81K Buy
8,700
+300
+4% +$2.25K ﹤0.01% 6915
2021
Q2 		$77K Buy
+8,400
New +$85.1K ﹤0.01% 7100
2021
Q1 		– Sell
-462
Closed -$474K – 9725
2020
Q4 		$474K Buy
462
+18
+4% +$182 ﹤0.01% 3496
2020
Q3 		$447K Buy
444
+63
+17% +$642 ﹤0.01% 3140
2020
Q2 		$397K Buy
381
+14
+4% +$145 ﹤0.01% 3195
2020
Q1 		$309K Sell
367
-626
-63% -$6.08K ﹤0.01% 3125
2019
Q4 		$868K Buy
993
+182
+22% +$1.51K ﹤0.01% 2218
2019
Q3 		$873K Buy
811
+154
+23% +$1.66K ﹤0.01% 2067
2019
Q2 		$835K Sell
657
-175
-21% -$4.03K ﹤0.01% 2068
2019
Q1 		$3.23M Buy
832
+664
+395% +$20.3K 0.01% 983
2018
Q4 		$341K Buy
168
+68
+68% +$2.04K ﹤0.01% 2593
2018
Q3 		$458K Sell
100
-39
-28% -$1.88K ﹤0.01% 2726
2018
Q2 		$822K Sell
139
-2,389
-95% -$138K ﹤0.01% 1967
2018
Q1 		$267K Buy
2,528
+2,441
+2,806% +$183K 0.01% 1058
2017
Q4 		$96K Sell
87
-158
-64% -$17.7K ﹤0.01% 1839
2017
Q3 		$850K Buy
245
+64
+35% +$5.95K 0.03% 432
2017
Q2 		$305K Buy
181
+96
+113% +$5.37K 0.01% 938
2017
Q1 		$17K Buy
85
+71
+507% +$2.59K ﹤0.01% 3429
2016
Q4 		$1K Sell
14
-73
-84% -$3.16K ﹤0.01% 5468
2016
Q3 		$83K Buy
87
+72
+480% +$3.64K 0.01% 1683
2016
Q2 		$5K Sell
15
-44
-75% -$1.38K ﹤0.01% 4264
2016
Q1 		$7K Buy
59
+2
+4% +$90 ﹤0.01% 3811
2015
Q4 		$19K Sell
57
-124
-69% -$9.73K ﹤0.01% 2747
2015
Q3 		$22K Buy
181
+103
+132% +$9.74K ﹤0.01% 2696
2015
Q2 		$14K Buy
78
+72
+1,200% +$13K ﹤0.01% 2774
2015
Q1 		$12K Sell
6
-77
-93% -$16.5K ﹤0.01% 2796
2014
Q4 		$70K Buy
+83
New +$18.4K 0.01% 1147

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
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 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
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Simplex Trading's PBYI Position: Q2 2026 in Review

Simplex Trading opened a new position in Puma Biotechnology (PBYI) in Q2 2026: 1,041 shares worth $8.44K. The stake represents ﹤0.01% of the portfolio and ranks #7815 among its holdings. This is a return to the name: Simplex Trading previously reported a position in PBYI as recently as Q2 2024.

Simplex Trading first reported a position in PBYI in Q4 2014 and has held it in 31 quarters since. The position peaked at $1.29M in Q2 2017. 161 funds tracked by Wall St. Rank hold PBYI as of Q2 2026.

  • Simplex Trading held 1,041 shares of Puma Biotechnology worth $8.44K as of Q2 2026.
  • Puma Biotechnology was a new Simplex Trading position in Q2 2026.
  • Puma Biotechnology made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #7815 holding.
  • Simplex Trading first reported a position in Puma Biotechnology in Q4 2014 and has held it in 31 quarters since.
  • Simplex Trading's Puma Biotechnology position peaked at $1.29M in Q2 2017.
  • 161 funds tracked by Wall St. Rank held Puma Biotechnology as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.