Dark
Light
System
Security
MAST THERAPEUTICS
MAST THERAPEUTICS. Institutional holdings reported to the SEC.

Institutional Holders (2016Q3)
Portfolio Summary: 42 Institutional holders with a total value of $3,190,050.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 BAKER BROS. ADVISORS LP 8,584,051 944,000 29.59%
2 VANGUARD GROUP INC 7,552,722 830,000 26.02%
3 Alyeska Investment Group, L.P. 2,969,381 327,000 10.25% Call
4 SUSQUEHANNA INTERNATIONAL GROUP, LLP 2,836,500 312,000 9.78% Call
5 BlackRock Institutional Trust Company, N.A. 1,719,932 189,000 5.92%
6 RENAISSANCE TECHNOLOGIES LLC 1,396,562 154,000 4.83%
7 GEODE CAPITAL MANAGEMENT, LLC 1,012,559 111,000 3.48%
8 PERKINS CAPITAL MANAGEMENT INC 559,750 62,000 1.94%
9 CREDIT SUISSE AG/ 500,160 55,000 1.72%
10 Creative Planning 413,401 45,000 1.41%
11 HighTower Advisors, LLC 336,098 37,000 1.16%
12 NORTHERN TRUST CORP 318,323 35,000 1.10%
13 Bank of New York Mellon Corp 134,463 15,000 0.47%
14 CITADEL ADVISORS LLC 109,300 12,000 0.38% Call
15 Virtu KCG Holdings LLC 101,806 11,000 0.34%
16 BLACKROCK ADVISORS LLC 50,199 6,000 0.19%
17 STATE STREET CORP 54,724 6,000 0.19%
18 WOLVERINE TRADING LP /BD 55,200 6,000 0.19% Call
19 GUGGENHEIM CAPITAL LLC 46,353 5,000 0.16%
20 SUSQUEHANNA INTERNATIONAL GROUP, LLP 46,525 5,000 0.16%
21 BlackRock Fund Advisors 37,601 4,000 0.13%
22 WOLVERINE TRADING LP /BD 30,300 3,000 0.09% Put
23 SUSQUEHANNA INTERNATIONAL GROUP, LLP 24,800 3,000 0.09% Put
24 Stanley-Laman Group, Ltd. 15,000 2,000 0.06%
25 WOLVERINE TRADING LP /BD 23,257 2,000 0.06%
26 SIMPLEX TRADING, LLC 25,300 2,000 0.06%
27 LAU ASSOCIATES LLC 20,000 2,000 0.06%
28 NEXT Financial Group, Inc 5,000 1,000 0.03%
29 RAYMOND JAMES & ASSOCIATES 12,080 1,000 0.03%
30 BANK OF AMERICA CORP /DE/ 5,800 1,000 0.03%
31 INTEGRAL DERIVATIVES, LLC 10,800 1,000 0.03% Call
32 EARNEST PARTNERS LLC 5,400 1,000 0.03%
33 FNY Managed Accounts LLC 20 50 0.00% Call
34 MANUFACTURERS LIFE INSURANCE COMPANY, THE 2,139 0 0.00%
35 LADENBURG THALMANN FINANCIAL SERVICES INC. 1,004 0 0.00%
36 REILLY FINANCIAL ADVISORS, LLC 40 0 0.00%
37 Corbenic Partners LLC 1,500 0 0.00%
38 BARCLAYS PLC 400 0 0.00%
39 Pine River Capital Management L.P. 1,250,000 0 0.00%
40 Financial Architects, Inc 400 0 0.00%
41 UBS Group AG 400 0 0.00%
42 DEUTSCHE BANK AG\ 141 0 0.00%

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.