Dark
Light
System
Institutional Investment Manager
RTW INVESTMENTS, LP
RTW INVESTMENTS, LP (CIK: 0001493215) incorporated in Delaware, located at 40 10th Avenue, New York, NY. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q4)
Portfolio Summary: 38 holdings with a total value of $301,581,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 BERKSHIRE HATHAWAY INC DEL 50 7,000 0.00%
2 UNITED STATES OIL FUND LP 13,850 7,000 0.00% Call
3 NEVRO CORP COM 142 37,000 0.01% Put
4 ADAPTIMMUNE THERAPEUTICS PLC 6,923 83,000 0.03%
5 MERIDIAN BIOSCIENCE INC 1,252 110,000 0.04% Call
6 ENDOLOGIX INC 15,000 149,000 0.05%
7 VERACYTE INC 25,000 180,000 0.06%
8 T2 BIOSYSTEMS INCORPORATED 20,900 229,000 0.08%
9 Nivalis Therapeutics Inc 30,000 232,000 0.08%
10 BLUEBIRD BIO INC COM 5,300 340,000 0.11%
11 Natera, Inc. 31,693 342,000 0.11%
12 GENOMIC HEALTH INC COM 15,000 528,000 0.18%
13 BioPharmX Corporation 370,636 563,000 0.19%
14 ALLSCRIPTS HEALTHCARE SOLUTN 48,000 738,000 0.24%
15 ANIKA THERAPEUTICS INC 27,500 1,049,000 0.35%
16 MASIMO CORP 25,900 1,075,000 0.36%
17 CYTRX CORP 461,824 1,224,000 0.41%
18 INVUITY INC 202,808 1,789,000 0.59%
19 ACCELERATE DIAGNOSTICS INC 105,468 2,267,000 0.75%
20 LIPOCINE INC NEW 216,414 2,798,000 0.93%
21 REGENXBIO INC COM 217,210 3,606,000 1.20%
22 DYAX CORP COM CVR 113,641 4,275,000 1.42%
23 GLOBAL BLOOD THERAPEUTICS INCORPORATED 171,898 5,558,000 1.84%
24 CORIUM INTERNATIONAL INC 730,031 5,928,000 1.97%
25 BRISTOL MYERS SQUIBB CO 104,330 7,177,000 2.38%
26 SYMMETRY SURGICAL INC 863,264 7,942,000 2.63%
27 CELLDEX THERAPEUTICS INC NEW 625,386 9,806,000 3.25%
28 AGENUS INC 2,173,267 9,867,000 3.27%
29 FIVE PRIME THERAPEUTICS INC 252,452 10,477,000 3.47%
30 Atara Biotherapeutics Inc 425,852 11,247,000 3.73%
31 MIRATI THERAPEUTICS INC COM 378,287 11,954,000 3.96%
32 BIOCRYST PHARMACEUTICALS 1,973,108 20,362,000 6.75%
33 ACHILLION PHARMACEUTICALS IN 1,951,922 21,061,000 6.98%
34 DICERNA PHARMACEUTICALS INC 1,975,229 23,446,000 7.77%
35 KITE PHARMA INCORPORATED 411,143 25,335,000 8.40%
36 OMEROS CORP 1,785,502 28,086,000 9.31%
37 LA JOLLA PHARMACEUTICAL CO 1,064,247 28,735,000 9.53%
38 ALNYLAM PHARMACEUTICALS INC 562,697 52,972,000 17.56%

Portfolio data is normalized using SEC Form 13F filings, including the Restatement filing (0001493152-16-010244, filed 2016.05.24).

From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.