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

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.