Simplex Trading
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Simplex Trading’s Phathom Pharmaceuticals PHAT Stock Holding History

Simplex Trading’s Portfolio PHAT Stock Details PHAT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$11.9K Sell
1,100
-2,600
-70% -$29.7K ﹤0.01% 7549
2026
Q1 		$41.1K Buy
3,700
+700
+23% +$8.84K ﹤0.01% 6078
2025
Q4 		$49.8K Sell
3,000
-5,000
-63% -$71.4K ﹤0.01% 5660
2025
Q3 		$94K Sell
8,000
-191,200
-96% -$1.97M ﹤0.01% 5821
2025
Q2 		$1.91M Buy
199,200
+155,300
+354% +$859K ﹤0.01% 2157
2025
Q1 		$275K Buy
43,900
+39,000
+796% +$237K ﹤0.01% 4001
2024
Q4 		$39K Buy
4,900
+1,400
+40% +$17.3K ﹤0.01% 6130
2024
Q3 		$63K Buy
3,500
+3,300
+1,650% +$46.1K ﹤0.01% 5685
2024
Q2 		$2K Sell
200
-8,300
-98% -$85.5K ﹤0.01% 8330
2024
Q1 		$90K Buy
8,500
+7,900
+1,317% +$67.1K ﹤0.01% 5695
2023
Q4 		$5K Sell
600
-1,700
-74% -$14.6K ﹤0.01% 7891
2023
Q3 		$23K Sell
2,300
-1,600
-41% -$21.9K ﹤0.01% 6509
2023
Q2 		$55K Buy
3,900
+3,600
+1,200% +$41.5K ﹤0.01% 5753
2023
Q1 		$2K Sell
300
-300
-50% -$2.63K ﹤0.01% 8506
2022
Q4 		$6K Buy
600
+300
+100% +$3.09K ﹤0.01% 7957
2022
Q3 		$3K Buy
+300
New +$2.86K ﹤0.01% 9133
2022
Q2 		– Sell
-100
Closed -$1K – 10816
2022
Q1 		$1K Hold
100
– – ﹤0.01% 10126
2021
Q4 		$1K Buy
+100
New +$2.35K ﹤0.01% 10227
2021
Q2 		– Sell
-1
Closed -$3K – 10546
2021
Q1 		$3K Hold
1
– – ﹤0.01% 8387
2020
Q4 		$3K Buy
+1
New +$41 ﹤0.01% 7893

Other funds holding PHAT

FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
MVM
Medicxi Ventures Management St. Helier, Jersey $177M AUM 212.06% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
CG
Carlyle Group Washington, District of Columbia $10B AUM 10.61% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
GKIM
GW&K Investment Management Boston, Massachusetts $12.8B AUM 48.82% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return

Simplex Trading's PHAT Position: Q1 2026 in Review

Simplex Trading sold out of Phathom Pharmaceuticals (PHAT) in Q1 2026, closing a stake of 1,599 shares — an estimated $20.2K sold.

Simplex Trading first reported a position in PHAT in Q4 2020 and held it in 12 quarters. The position peaked at $348K in Q2 2023. 174 funds tracked by Wall St. Rank hold PHAT as of Q1 2026.

  • Simplex Trading reported no remaining Phathom Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 1,599 Phathom Pharmaceuticals shares in Q1 2026, an estimated $20.2K.
  • Simplex Trading first reported a position in Phathom Pharmaceuticals in Q4 2020 and held it in 12 quarters.
  • Simplex Trading's Phathom Pharmaceuticals position peaked at $348K in Q2 2023.
  • 174 funds tracked by Wall St. Rank held Phathom Pharmaceuticals as of Q1 2026.

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