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Rock Springs Capital Management Portfolio holdings

AUM $1.7B
1-Year Est. Return 93.03%
This Fund
S&P 500
This Quarter Est. Return
+21.74%
1 Year Est. Return
+93.03%
3 Year Est. Return
+228.43%
5 Year Est. Return
+368.14%
10 Year Est. Return
+4,607.77%
AUM
$3.87B
AUM Growth
+$435M
Cap. Flow
+$144M
Cap. Flow %
3.71%
Top 10 Hldgs %
35.18%
Holding
133
New
4
Increased
60
Reduced
11
Closed
5

Top Buys

Rank Stock Value
1
IMCR icon
Immunocore
IMCR
+$39.2M
2
BPMC
Blueprint Medicines
BPMC
+$35.9M
3
CERE
Cerevel Therapeutics Holdings, Inc. Common Stock
CERE
+$21.8M
4
WST icon
West Pharmaceutical
WST
+$21.2M
5
GOSS icon
Gossamer Bio
GOSS
+$19.7M

Top Sells

Rank Stock Value
1
SRRA
Sierra Oncology, Inc. Common Stock
SRRA
+$64.6M
2
TPTX
Turning Point Therapeutics, Inc. Common Stock
TPTX
+$20.5M
3
SWAV
Shockwave Medical, Inc. Common Stock
SWAV
+$15.4M
4
AMLX icon
Amylyx Pharmaceuticals
AMLX
+$14.2M
5
EPZM
Epizyme, Inc
EPZM
+$11M

Sector Composition

Rank Sector Weight
1 Healthcare 96.71%
2 Consumer Staples 0.91%
3 Industrials 0.67%
4 Financials 0.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FUSN
126
DELISTED
Fusion Pharmaceuticals Inc. Common Shares
FUSN
– –
-809,854
Closed -$2.02M
TPTX
127
DELISTED
Turning Point Therapeutics, Inc. Common Stock
TPTX
– –
-271,787
Closed -$20.5M
EPZM
128
DELISTED
Epizyme, Inc
EPZM
– –
-7,485,543
Closed -$11M
SRRA
129
DELISTED
Sierra Oncology, Inc. Common Stock
SRRA
– –
-1,174,786
Closed -$64.6M
2 3 4 5
6

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PP
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GAM
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FACM
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RMC
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Rock Springs Capital Management's Q3 2022 Portfolio in Review

As of Q3 2022, Rock Springs Capital Management held 133 positions worth $3.87B, up 13% from $3.44B the previous quarter. Its ten largest holdings account for 35% of the portfolio.

Rock Springs Capital Management deployed $144M of net new capital in Q3 2022, opening 4 new positions and adding to 60 existing holdings. Its largest new stake was Gossamer Bio: 1,586,962 shares worth $19M.

By sector, the portfolio is most concentrated in Healthcare at 97% of assets, up from 97% a quarter earlier, followed by Consumer Staples and Industrials.

On the sell side, the largest reduction was Shockwave Medical, Inc. Common Stock, an estimated $15.4M trimmed.

  • Rock Springs Capital Management's largest Q3 2022 buy was Gossamer Bio: 1,586,962 shares worth $19M.
  • Rock Springs Capital Management added most to Immunocore in Q3 2022, an estimated $39.2M increase.
  • Rock Springs Capital Management's biggest Q3 2022 reduction was Shockwave Medical, Inc. Common Stock, cutting an estimated $15.4M.
  • Rock Springs Capital Management fully exited Sierra Oncology, Inc. Common Stock in Q3 2022, selling an estimated $64.6M.
  • Rock Springs Capital Management's ten largest holdings make up 35% of its $3.87B portfolio in Q3 2022.
  • Rock Springs Capital Management opened 4 new positions and closed 5 in Q3 2022.
  • Rock Springs Capital Management's portfolio value rose 13% quarter-over-quarter to $3.87B.

Based on Rock Springs Capital Management's 13F filing for Q3 2022, filed 14 Nov 2022.