Rock Springs Capital Management LP
Annual return '25
+1.1%
SPY '25
+17.7%
Alpha
-16.6ptsvs SPY
Invested
$1.7B
Holdings
100
Trades YTD
0
Performance · Fund vs SPY
Cumulative return · quarterly snapshotsCoverage 98%. 4 quarters of 2025 measured against SPY adj-close benchmark.
Top holdings · current snapshot
Source: 13F-HR01
$RVMD
REVOLUTION MEDICINES INC
Q2 2025: Increased +3.9% (1.28M → 1.33M shares)
6.9%
02
$LLY
ELI LILLY & CO
Q1 2026: New position (11.7k shares)
5.4%
03
$MDGL
MADRIGAL PHARMACEUTICALS INC
Q3 2025: Sold 1.8% (140.3k → 137.7k shares)
5.3%
04
$MIRM
MIRUM PHARMACEUTICALS INC
Q3 2025: Sold 7.0% (818.2k → 761.1k shares)
4.4%
05
$ARGX
ARGENX SE
Q3 2025: Sold 18.8% (175.8k → 142.8k shares)
4.2%
06
$RYTM
RHYTHM PHARMACEUTICALS INC
Q3 2025: Sold 16.7% (861.2k → 717.1k shares)
3.5%
07
$INSM
INSMED INC
Q3 2025: Sold 26.7% (525.0k → 385.0k shares)
3.0%
08
$ASND
ASCENDIS PHARMA A/S
Q3 2025: Sold 1.1% (217.0k → 214.5k shares)
2.6%
09
$XENE
XENON PHARMACEUTICALS INC
Q3 2025: Sold 8.6% (931.7k → 851.7k shares)
2.6%
10
$TVTX
TRAVERE THERAPEUTICS INC
Q3 2025: Increased +13.4% (1.91M → 2.16M shares)
2.6%
Recent trades · Last 90 days
No Form 4 / 13D / 13G trade events on file in the recent window. 13F filers report position snapshots quarterly rather than per-trade events, so this section is most useful for managers who also file Form 4 or 13D/G.
Convergence · Pattern Engine ships in v1.1
30-day windowIn development
Convergence participation lands with the Pattern Engine.
Once the Pattern Engine ships, this section will list every active convergence event this fund is named in — with the other named funds, the Congress members on the same name, and combined position size.
Source data: SEC EDGAR · 13F-HR filings · Performance through 2025-12-31 · Last refreshed 11:15 UTC.