Rock Springs Capital Management LP Q2 2021 Filing
Filed August 16, 2021
Portfolio Value
$5.1B
Holdings
156
Report Date
Q2 2021
Filing Type
13F-HR
All Holdings (156 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | AGLAGILON HEALTH INC | 6,999,023 | $283.9B | 5611.85% | |
| 2 | ZLABZAI LAB LTD | 1,014,000 | $179.5B | 3546.92% | |
| 3 | AGIOAGIOS PHARMACEUTICALS INC | 2,574,308 | $141.9B | 2803.85% | |
| 4 | HUMHUMANA INC | 302,500 | $133.9B | 2646.79% | |
| 5 | AFWALIGN TECHNOLOGY INC | 187,750 | $114.7B | 2267.17% | |
| 6 | IDXXIDEXX LABS INC | 180,000 | $113.7B | 2246.70% | |
| 7 | PODDINSULET CORP | 408,750 | $112.2B | 2217.59% | |
| 8 | ISRGINTUITIVE SURGICAL INC | 120,000 | $110.4B | 2181.04% | |
| 9 | NBIXNEUROCRINE BIOSCIENCES INC | 1,015,000 | $98.8B | 1952.24% | |
| 10 | NVV1NOVAVAX INC | 455,000 | $96.6B | 1909.18% | |
| 11 | UNHUNITEDHEALTH GROUP INC | 240,000 | $96.1B | 1899.39% | |
| 12 | ARGXARGENX SE | 315,000 | $94.8B | 1874.31% | |
| 13 | IMCRIMMUNOCORE HLDGS PLC | 2,394,785 | $93.5B | 1848.23% | |
| 14 | HCAHCA HEALTHCARE INC | 450,000 | $93.0B | 1838.66% | |
| 15 | NVROEURNEVRO CORP | 531,000 | $88.0B | 1739.86% | |
| 16 | FRPTFRESHPET INC | 506,500 | $82.5B | 1631.26% | |
| 17 | NVTA1EURINVITAE CORP | 2,302,032 | $77.6B | 1534.60% | |
| 18 | 2L9BLUEPRINT MEDICINES CORP | 808,860 | $71.1B | 1406.12% | |
| 19 | EXASEXACT SCIENCES CORP | 570,000 | $70.9B | 1400.38% | |
| 20 | ONCBEIGENE LTD | 200,000 | $68.6B | 1356.53% | |
| 21 | GRPHGRAPHITE BIO INC | 2,151,738 | $66.1B | 1306.82% | |
| 22 | ACRSACLARIS THERAPEUTICS INC | 3,762,312 | $66.1B | 1305.70% | |
| 23 | PCRXPACIRA BIOSCIENCES INC | 1,025,000 | $62.2B | 1229.23% | |
| 24 | EWEDWARDS LIFESCIENCES CORP | 582,000 | $60.3B | 1191.31% | |
| 25 | PHRPHREESIA INC | 960,000 | $58.8B | 1163.04% | |
| 26 | HZNPHORIZON THERAPEUTICS PUB L | 625,000 | $58.5B | 1156.66% | |
| 27 | VERVVERVE THERAPEUTICS INC | 962,826 | $58.0B | 1146.50% | |
| 28 | —EARGO INC | 1,450,000 | $57.9B | 1143.72% | |
| 29 | TFXTELEFLEX INCORPORATED | 130,000 | $52.2B | 1032.31% | |
| 30 | MRTXEURMIRATI THERAPEUTICS INC | 319,085 | $51.5B | 1018.65% | |
| 31 | ALNYALNYLAM PHARMACEUTICALS INC | 300,000 | $50.9B | 1005.09% | |
| 32 | PRTAPROTHENA CORP PLC | 950,091 | $48.8B | 965.33% | |
| 33 | ARVNARVINAS INC | 626,100 | $48.2B | 952.80% | |
| 34 | RAREULTRAGENYX PHARMACEUTICAL IN | 465,000 | $44.3B | 876.28% | |
| 35 | KRTXKARUNA THERAPEUTICS INC | 386,618 | $44.1B | 871.00% | |
| 36 | ACHCACADIA HEALTHCARE COMPANY IN | 700,000 | $43.9B | 868.11% | |
| 37 | HCATHEALTH CATALYST INC | 785,000 | $43.6B | 861.20% | |
| 38 | LFSTLIFESTANCE HEALTH GROUP INC | 1,500,000 | $41.8B | 825.92% | |
| 39 | SWAVUSDSHOCKWAVE MED INC | 220,000 | $41.7B | 824.95% | |
| 40 | —BRIGHT HEALTH GROUP INC | 2,375,000 | $40.8B | 805.46% | |
| 41 | PENPENUMBRA INC | 147,500 | $40.4B | 798.92% | |
| 42 | ARDXARDELYX INC | 5,248,829 | $39.8B | 786.31% | |
| 43 | SGENUSDSEAGEN INC | 250,000 | $39.5B | 780.07% | |
| 44 | BIIBBIOGEN INC | 113,500 | $39.3B | 776.75% | |
| 45 | CVETUSDCOVETRUS INC | 1,455,000 | $39.3B | 776.41% | |
| 46 | EHCENCOMPASS HEALTH CORP | 500,000 | $39.0B | 771.07% | |
| 47 | NVCRNOVOCURE LTD | 175,000 | $38.8B | 767.20% | |
| 48 | —MERSANA THERAPEUTICS INC | 2,845,618 | $38.6B | 763.72% | |
| 49 | ACCDEURACCOLADE INC | 665,000 | $36.1B | 713.78% | |
| 50 | EVHEVOLENT HEALTH INC | 1,699,043 | $35.9B | 709.19% | |
| 51 | BSXBOSTON SCIENTIFIC CORP | 800,000 | $34.2B | 676.07% | |
| 52 | —PPD INC | 675,000 | $31.1B | 614.86% | |
| 53 | ASNDASCENDIS PHARMA A/S | 233,500 | $30.7B | 607.08% | |
| 54 | KYMRKYMERA THERAPEUTICS INC | 626,527 | $30.4B | 600.55% | |
| 55 | IRTCIRHYTHM TECHNOLOGIES INC | 448,000 | $29.7B | 587.47% | |
| 56 | CGEMCULLINAN ONCOLOGY INC | 1,075,912 | $27.7B | 547.55% | |
| 57 | ADPTADAPTIVE BIOTECHNOLOGIES COR | 650,000 | $26.6B | 524.90% | |
| 58 | MIRMMIRUM PHARMACEUTICALS INC | 1,523,723 | $26.3B | 520.67% | |
| 59 | LUNGPULMONX CORP | 592,500 | $26.1B | 516.64% | |
| 60 | ALLKGUSDALLAKOS INC | 305,706 | $26.1B | 515.79% | |
| 61 | CERE1EURCEREVEL THERAPEUTICS HLDNG I | 1,016,945 | $26.1B | 514.92% | |
| 62 | MDGLMADRIGAL PHARMACEUTICALS INC | 262,500 | $25.6B | 505.35% | |
| 63 | SRPTSAREPTA THERAPEUTICS INC | 328,750 | $25.6B | 505.10% | |
| 64 | BOLT1EURBOLT BIOTHERAPEUTICS INC | 1,619,248 | $25.0B | 494.76% | |
| 65 | —EPIZYME INC | 3,011,487 | $25.0B | 494.58% | |
| 66 | GHGUARDANT HEALTH INC | 200,000 | $24.8B | 490.89% | |
| 67 | ACADACADIA PHARMACEUTICALS INC | 1,000,000 | $24.4B | 482.03% | |
| 68 | CNMDCONMED CORP | 162,500 | $22.3B | 441.36% | |
| 69 | OSH3EUROAK STR HEALTH INC | 375,000 | $22.0B | 434.09% | |
| 70 | TVTXTRAVERE THERAPEUTICS INC | 1,494,164 | $21.8B | 430.84% | |
| 71 | COLLCOLLEGIUM PHARMACEUTICAL INC | 920,000 | $21.7B | 429.84% | |
| 72 | BMRNBIOMARIN PHARMACEUTICAL INC | 253,500 | $21.2B | 418.04% | |
| 73 | —ABCAM PLC | 1,097,500 | $20.9B | 412.98% | |
| 74 | —INTERSECT ENT INC | 1,220,000 | $20.9B | 412.07% | |
| 75 | RIGLUSDRIGEL PHARMACEUTICALS INC | 4,754,900 | $20.6B | 407.84% | |
| 76 | —SIERRA ONCOLOGY INC | 1,018,658 | $19.8B | 391.97% | |
| 77 | DC4DEXCOM INC | 45,600 | $19.5B | 384.82% | |
| 78 | INNVINNOVAGE HLDG CORP | 902,500 | $19.2B | 380.09% | |
| 79 | —TRANSLATE BIO INC | 693,266 | $19.1B | 377.35% | |
| 80 | AMRNAMARIN CORP PLC | 4,320,000 | $18.9B | 373.97% | |
| 81 | BMEABIOMEA FUSION INC | 1,165,582 | $18.2B | 359.58% | |
| 82 | SPRBSPRUCE BIOSCIENCES INC | 1,605,001 | $18.0B | 355.59% | |
| 83 | RCKTROCKET PHARMACEUTICALS INC | 403,270 | $17.9B | 353.00% | |
| 84 | KURAKURA ONCOLOGY INC | 816,800 | $17.0B | 336.57% | |
| 85 | AVIRATEA PHARMACEUTICALS INC | 791,133 | $17.0B | 335.86% | |
| 86 | CYTK 4 11/15/26CYTOKINETICS INC | 8,000,000 | $16.6B | 327.48% | |
| 87 | DVAXDYNAVAX TECHNOLOGIES CORP | 1,679,921 | $16.5B | 327.03% | |
| 88 | RLAYRELAY THERAPEUTICS INC | 450,258 | $16.5B | 325.60% | |
| 89 | NKTXNKARTA INC | 497,948 | $15.8B | 311.87% | |
| 90 | —CHIASMA INC | 3,258,144 | $15.4B | 304.58% | |
| 91 | —PROMETHEUS BIOSCIENCES INC | 596,096 | $14.6B | 289.34% | |
| 92 | —OLINK HLDG AB | 425,000 | $14.6B | 289.12% | |
| 93 | APLTAPPLIED THERAPEUTICS INC | 701,680 | $14.6B | 288.17% | |
| 94 | MREOMEREO BIOPHARMA GROUP PLC | 4,542,769 | $14.4B | 284.61% | |
| 95 | EPIEURESSA PHARMA INC | 503,035 | $14.4B | 284.04% | |
| 96 | INZYINOZYME PHARMA INC | 840,272 | $14.3B | 282.97% | |
| 97 | ANABANAPTYSBIO INC | 535,232 | $13.9B | 274.30% | |
| 98 | —GAMIDA CELL LTD | 2,107,000 | $13.5B | 266.93% | |
| 99 | SPROSPERO THERAPEUTICS INC | 965,928 | $13.5B | 266.49% | |
| 100 | AKROAKERO THERAPEUTICS INC | 528,601 | $13.1B | 259.20% |
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