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 		$242K Sell
22,300
-83,900
-79% -$957K ﹤0.01% 4480
2026
Q1 		$1.18M Sell
106,200
-66,100
-38% -$835K ﹤0.01% 2316
2025
Q4 		$2.86M Buy
172,300
+111,500
+183% +$1.59M ﹤0.01% 1694
2025
Q3 		$715K Sell
60,800
-48,100
-44% -$496K ﹤0.01% 3394
2025
Q2 		$1.04M Buy
108,900
+100,100
+1,138% +$554K ﹤0.01% 2731
2025
Q1 		$55K Buy
+8,800
New +$53.4K ﹤0.01% 5672
2024
Q4 		– Sell
-9,500
Closed -$171K – 9363
2024
Q3 		$171K Sell
9,500
-23,900
-72% -$334K ﹤0.01% 4677
2024
Q2 		$344K Buy
33,400
+2,000
+6% +$20.6K ﹤0.01% 4073
2024
Q1 		$333K Buy
31,400
+18,400
+142% +$156K ﹤0.01% 4275
2023
Q4 		$118K Sell
13,000
-33,100
-72% -$285K ﹤0.01% 5220
2023
Q3 		$478K Buy
46,100
+11,100
+32% +$152K ﹤0.01% 3449
2023
Q2 		$501K Buy
35,000
+20,600
+143% +$238K ﹤0.01% 3317
2023
Q1 		$102K Buy
14,400
+9,900
+220% +$87K ﹤0.01% 5132
2022
Q4 		$50K Buy
4,500
+500
+13% +$5.16K ﹤0.01% 5903
2022
Q3 		$44K Buy
4,000
+2,400
+150% +$22.9K ﹤0.01% 6625
2022
Q2 		$13K Sell
1,600
-1,700
-52% -$17.5K ﹤0.01% 8060
2022
Q1 		$44K Buy
3,300
+2,000
+154% +$32.3K ﹤0.01% 7317
2021
Q4 		$25K Buy
+1,300
New +$30.6K ﹤0.01% 8121

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.