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Rock Springs Capital Management LP
Institution
10% Owner
Rock Springs Capital Management LP
$3,042,632,000.00
%
COMPANY
SHARES
NET TOTAL
19.28%
Other
88,690,920
$586,527,000.00
6.56%
HUMANA INC
426,358
$199,565,000.00
4.53%
UNITEDHEALTH GROUP INC
268,500
$137,910,000.00
4.36%
ARGENX SE
350,000
$132,608,000.00
3.60%
NEUROCRINE BIOSCIENCES INC
1,122,500
$109,421,000.00
3.60%
INSULET CORP
502,000
$109,406,000.00
3.28%
IMMUNOCORE HLDGS PLC
2,671,652
$99,679,000.00
2.76%
EVOLENT HEALTH INC
2,738,000
$84,084,000.00
2.76%
ALIGN TECHNOLOGY INC
354,500
$83,900,000.00
2.58%
IDEXX LABS INC
223,750
$78,476,000.00
2.14%
ULTRAGENYX PHARMACEUTICAL IN
1,093,030
$65,210,000.00
2.13%
AGIOS PHARMACEUTICALS INC
2,928,458
$64,924,000.00
2.12%
SIERRA ONCOLOGY INC
1,174,786
$64,601,000.00
1.97%
INTUITIVE SURGICAL INC
298,500
$59,912,000.00
1.96%
HORIZON THERAPEUTICS PUB L
746,000
$59,501,000.00
1.95%
PACIRA BIOSCIENCES INC
1,017,500
$59,320,000.00
1.88%
EDWARDS LIFESCIENCES CORP
602,000
$57,244,000.00
1.86%
MIRATI THERAPEUTICS INC
844,977
$56,723,000.00
1.84%
KARUNA THERAPEUTICS INC
441,893
$55,904,000.00
1.80%
ACLARIS THERAPEUTICS INC
3,927,149
$54,823,000.00
1.67%
ACADIA HEALTHCARE COMPANY IN
753,500
$50,959,000.00
1.64%
PENUMBRA INC
401,500
$49,995,000.00
1.63%
BLUEPRINT MEDICINES CORP
979,174
$49,458,000.00
1.59%
ALNYLAM PHARMACEUTICALS INC
332,500
$48,495,000.00
1.58%
SEAGEN INC
272,000
$48,128,000.00
1.54%
CEREVEL THERAPEUTICS HLDNG I
1,767,141
$46,723,000.00
1.51%
SHOCKWAVE MED INC
240,500
$45,976,000.00
1.48%
BAXTER INTL INC
701,600
$45,064,000.00
1.39%
ZAI LAB LTD
1,215,900
$42,167,000.00
1.30%
ASCENDIS PHARMA A/S
425,500
$39,554,000.00
1.16%
DEXCOM INC
472,800
$35,238,000.00
1.14%
COVETRUS INC
1,678,800
$34,835,000.00
1.12%
XENON PHARMACEUTICALS INC
1,123,604
$34,180,000.00
1.11%
NEVRO CORP
773,300
$33,894,000.00
1.10%
WEST PHARMACEUTICAL SVSC INC
111,000
$33,563,000.00
1.10%
MIRUM PHARMACEUTICALS INC
1,717,733
$33,427,000.00
1.09%
FRESHPET INC
637,600
$33,085,000.00
1.07%
PHREESIA INC
1,298,200
$32,468,000.00
1.05%
SAREPTA THERAPEUTICS INC
428,000
$32,083,000.00
0.96%
IRHYTHM TECHNOLOGIES INC
270,000
$29,168,000.00
0.80%
NOVAVAX INC
475,100
$24,434,000.00