Simplex Trading
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Simplex Trading’s Rhythm Pharmaceuticals RYTM Stock Holding History

Simplex Trading’s Portfolio RYTM Stock Details RYTM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$57.1K Sell
600
-800
-57% -$85.4K ﹤0.01% 6038
2026
Q2 		$155K Sell
1,400
-2,100
-60% -$190K ﹤0.01% 5032
2026
Q1 		$304K Buy
3,500
+3,000
+600% +$292K ﹤0.01% 3807
2025
Q4 		$53.5K Buy
500
+200
+67% +$21.2K ﹤0.01% 5596
2025
Q3 		$30K Sell
300
-7,600
-96% -$706K ﹤0.01% 6988
2025
Q2 		$499K Buy
7,900
+300
+4% +$18.4K ﹤0.01% 3515
2025
Q1 		$402K Buy
7,600
+4,400
+138% +$244K ﹤0.01% 3630
2024
Q4 		$179K Sell
3,200
-14,400
-82% -$795K ﹤0.01% 4627
2024
Q3 		$922K Sell
17,600
-14,700
-46% -$704K ﹤0.01% 2991
2024
Q2 		$1.33M Buy
32,300
+20,500
+174% +$818K ﹤0.01% 2618
2024
Q1 		$511K Sell
11,800
-3,200
-21% -$140K ﹤0.01% 3843
2023
Q4 		$689K Buy
15,000
+6,300
+72% +$199K ﹤0.01% 3377
2023
Q3 		$199K Sell
8,700
-27,600
-76% -$618K ﹤0.01% 4364
2023
Q2 		$598K Buy
36,300
+23,100
+175% +$417K ﹤0.01% 3122
2023
Q1 		$235K Buy
13,200
+11,000
+500% +$276K ﹤0.01% 4143
2022
Q4 		$64K Sell
2,200
-69,000
-97% -$1.77M ﹤0.01% 5572
2022
Q3 		$1.74M Buy
71,200
+69,700
+4,647% +$1.3M ﹤0.01% 2082
2022
Q2 		$6K Sell
1,500
-1,900
-56% -$10.4K ﹤0.01% 8748
2022
Q1 		$39K Sell
3,400
-400
-11% -$3.51K ﹤0.01% 7481
2021
Q4 		$37K Buy
3,800
+2,600
+217% +$29.2K ﹤0.01% 7637
2021
Q3 		$24K Hold
1,200
– – ﹤0.01% 8281
2021
Q2 		$23K Buy
1,200
+1,186
+8,471% +$24.6K ﹤0.01% 8475
2021
Q1 		$29K Sell
14
-40
-74% -$1.16K ﹤0.01% 7155
2020
Q4 		$160K Buy
54
+17
+46% +$432 ﹤0.01% 4898
2020
Q3 		$80K Buy
+37
New +$848 ﹤0.01% 5139
2020
Q2 		– Sell
-1
Closed -$1K – 8257
2020
Q1 		$1K Buy
+1
New +$18 ﹤0.01% 7404

Other funds holding RYTM

JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 42.55% 1-Year Est. Return
Federated Hermes
Federated Hermes Pittsburgh, Pennsylvania $71.4B AUM 33.43% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $704B AUM 26.74% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.23B AUM 121.47% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return

Simplex Trading's RYTM Position: Q3 2026 in Review

Simplex Trading increased its Rhythm Pharmaceuticals (RYTM) stake by 6.8% in Q3 2026, buying an estimated $25K and bringing the position to 3,669 shares worth $349K. The position accounts for ﹤0.01% of the portfolio, ranked #3995.

Simplex Trading first reported a position in RYTM in Q1 2020 and has held it in 13 quarters since. The position peaked at $381K in Q2 2026. 197 funds tracked by Wall St. Rank hold RYTM as of Q3 2026.

  • Simplex Trading held 3,669 shares of Rhythm Pharmaceuticals worth $349K as of Q3 2026.
  • Simplex Trading bought 234 Rhythm Pharmaceuticals shares in Q3 2026, an estimated $25K.
  • Rhythm Pharmaceuticals made up ﹤0.01% of Simplex Trading's portfolio in Q3 2026, its #3995 holding.
  • Simplex Trading first reported a position in Rhythm Pharmaceuticals in Q1 2020 and has held it in 13 quarters since.
  • Simplex Trading's Rhythm Pharmaceuticals position peaked at $381K in Q2 2026.
  • 197 funds tracked by Wall St. Rank held Rhythm Pharmaceuticals as of Q3 2026.

Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.