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	$349K	Buy	3,669 +234	+7%	+$25K	﹤0.01%	3995
2026 Q2	$381K	Buy	+3,435	New	+$311K	﹤0.01%	3950
2025 Q1	–	Sell	-2,475	Closed	-$137K	–	9514
2024 Q4	$138K	Buy	+2,475	New	+$137K	﹤0.01%	4884
2023 Q1	–	Sell	-5,581	Closed	-$140K	–	9985
2022 Q4	$162K	Buy	+5,581	New	+$143K	﹤0.01%	4494
2022 Q3	–	Sell	-25,890	Closed	-$481K	–	10761
2022 Q2	$107K	Buy	25,890 +21,991	+564%	+$120K	﹤0.01%	5489
2022 Q1	$44K	Buy	3,899 +551	+16%	+$4.84K	﹤0.01%	7318
2021 Q4	$33K	Sell	3,348 -1,056	-24%	-$11.9K	﹤0.01%	7781
2021 Q3	$91K	Sell	4,404 -800	-15%	-$12.2K	﹤0.01%	6751
2021 Q2	$101K	Buy	5,204 +488	+10%	+$10.1K	﹤0.01%	6717
2021 Q1	$100K	Sell	4,716 -5,484	-54%	-$159K	﹤0.01%	5753
2020 Q4	$303K	Buy	10,200 +5,415	+113%	+$138K	﹤0.01%	4062
2020 Q3	$103K	Buy	+4,785	New	+$110K	﹤0.01%	4875
2020 Q2	–	Sell	-1,209	Closed	-$18K	–	8258
2020 Q1	$18K	Buy	+1,209	New	+$21.6K	﹤0.01%	6052

Other funds holding RYTM

JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return

Primecap Management Pasadena, California $161B AUM 86.05% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

Westfield Capital Management Boston, Massachusetts $30.6B AUM 42.55% 1-Year Est. Return

Federated Hermes Pittsburgh, Pennsylvania $71.4B AUM 33.43% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $704B AUM 26.74% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Siren LLC Greenwich, Connecticut $4.23B AUM 121.47% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return

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. 214 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.
214 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.