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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 (2016Q1)
Portfolio Summary: 34 holdings with a total value of $275,445,000.
#
Name
Shares
Value ($)
%
Options
Notes
1 ALNYLAM PHARMACEUTICALS INC 866,379 54,383,000 19.74%
2 INCYTE 379,415 27,496,000 9.98%
3 LA JOLLA PHARMACEUTICAL CO 1,169,065 24,445,000 8.87%
4 ACHILLION PHARMACEUTICALS INC COM 2,558,859 19,754,000 7.17%
5 KITE PHARMA INCORPORATED 343,503 15,770,000 5.73%
6 OMEROS CORP 891,522 13,676,000 4.97%
7 AVEXIS INC COM 473,374 12,895,000 4.68%
8 Dicerna Pharmaceuticals 2,026,894 10,864,000 3.94%
9 AGENUS INC 2,414,524 10,044,000 3.65%
10 BLUEBIRD BIO INCORPORATED 226,371 9,621,000 3.49%
11 FIVE PRIME THERAPEUTICS INC 226,998 9,223,000 3.35%
12 MIRATI THERAPEUTICS INC COM 428,457 9,169,000 3.33%
13 SYMMETRY SURGICAL INC 919,680 9,068,000 3.29%
14 Atara Biotherapeutics Inc 473,126 9,004,000 3.27%
15 BRISTOL MYERS SQUIBB CO 109,701 7,008,000 2.54%
16 BIOCRYST PHARMACEUTICALS 1,973,932 5,586,000 2.03%
17 ISHARES TR 30,000 3,918,000 1.42%
18 CELLDEX THERAPEUTICS INC NEW 989,376 3,740,000 1.36%
19 CORIUM INTERNATIONAL INC 828,332 3,197,000 1.16%
20 GLOBAL BLOOD THERAPEUTICS IN COM 190,981 3,029,000 1.10%
21 REGENXBIO INC COM 241,323 2,606,000 0.95%
22 LIPOCINE INC NEW 240,438 2,440,000 0.89%
23 ACCELERATE DIAGNOSTICS INC 117,176 1,684,000 0.61%
24 INVUITY INC 212,808 1,536,000 0.56%
25 CYTRX CORP 513,092 1,375,000 0.50%
26 MASIMO CORP COM 25,900 1,084,000 0.39%
27 MANNKIND CORPORATION 4,385 899,000 0.33% Put
28 BIOPHARMX CORP COM 700,636 764,000 0.28%
29 ALLSCRIPTS HEALTHCARE 48,000 634,000 0.23%
30 NATERA INC 31,693 302,000 0.11%
31 Nivalis Therapeutics Inc 30,000 125,000 0.05%
32 ADAPTIMMUNE THERAPEUTICS PLC 7,691 63,000 0.02%
33 NEVRO CORP 142 36,000 0.01% Put
34 BERKSHIRE HATHAWAY INC DEL 50 7,000 0.00%

Portfolio data is normalized using SEC Form 13F filings, including the Original 13F-HR (0001493152-16-009638, filed 2016.05.11).

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.