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21VIANET GROUP INC
21VIANET GROUP INC. Institutional holdings reported to the SEC.

Institutional Holders (2015Q4)
Portfolio Summary: 107 Institutional holders with a total value of $981,574,373.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 Temasek Holdings (Private) Ltd 10,778,004 227,847,000 23.21%
2 Sculptor Capital LP 4,925,930 104,134,000 10.61%
3 WADDELL & REED FINANCIAL INC 3,068,700 64,873,000 6.61%
4 Pine River Capital Management L.P. 2,803,546 59,267,000 6.04%
5 GROUP ONE TRADING LLC 2,407,862 50,902,000 5.19%
6 Taconic Capital Advisors LP 1,850,000 39,109,000 3.98%
7 Fosun International Ltd 1,323,958 27,989,000 2.85%
8 PRUDENCE INVESTMENT MANAGEMENT LTD 1,210,305 25,586,000 2.61%
9 MORGAN STANLEY 1,100,561 23,265,000 2.37%
10 SUSQUEHANNA INTERNATIONAL GROUP, LLP 1,000,000 21,140,000 2.15% Put
11 BARCLAYS PLC 968,508 20,339,000 2.07%
12 SPQ ASIA CAPITAL LTD 919,794 19,444,000 1.98%
13 Top Ace Asset Management Ltd 775,303 16,390,000 1.67%
14 FIRST MANHATTAN CO. LLC. 752,166 15,900,000 1.62%
15 SUSQUEHANNA INTERNATIONAL GROUP, LLP 747,237 15,797,000 1.61%
16 DISCOVERY CAPITAL MANAGEMENT, LLC / CT 717,780 15,174,000 1.55%
17 CUTLER GROUP LLC / CA 703,288 14,867,000 1.51%
18 Walleye Trading LLC 611,100 12,917,000 1.32% Put
19 PACIFIC ALTERNATIVE ASSET MANAGEMENT COMPANY, LLC 551,648 11,662,000 1.19%
20 QVT Financial LP 525,189 11,102,000 1.13%
21 HSBC HOLDINGS PLC 502,192 10,616,000 1.08%
22 LIGHT STREET CAPITAL MANAGEMENT, LLC 500,000 10,570,000 1.08%
23 NINE MASTS CAPITAL Ltd 448,788 9,487,000 0.97%
24 CITADEL ADVISORS LLC 444,820 9,403,000 0.96%
25 NF TRINITY CAPITAL (HONG KONG) LTD 443,800 9,382,000 0.96%
26 PEAK6 Group LLC 345,000 7,293,000 0.74% Put
27 Silphium Asset Management Ltd 335,348 7,089,257 0.72%
28 Walleye Trading LLC 305,993 6,469,000 0.66%
29 CITIGROUP INC 296,365 6,265,000 0.64%
30 Central Asset Investments & Management Holdings (HK) Ltd 286,206 6,050,000 0.62%
31 CONNING INC. 233,186 4,930,000 0.50%
32 Spot Trading L.L.C 231,400 4,892,000 0.50% Put
33 PEAK6 Group LLC 220,617 4,664,000 0.48%
34 GOLDMAN SACHS GROUP INC 218,966 4,629,000 0.47%
35 STATE STREET CORP 193,668 4,094,000 0.42%
36 BARCLAYS PLC 191,800 4,028,000 0.41% Put
37 CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM 149,500 3,160,000 0.32%
38 Myriad Asset Management Ltd. 147,300 3,114,000 0.32%
39 LOOMIS SAYLES & CO L P 133,830 2,829,000 0.29%
40 Invesco Ltd. 127,812 2,702,000 0.28%
41 FIL Ltd 119,000 2,516,000 0.26%
42 Parallax Volatility Advisers, L.P. 116,100 2,454,000 0.25% Call
43 AGF INVESTMENTS INC. 111,000 2,347,000 0.24%
44 PEAK6 Group LLC 110,300 2,332,000 0.24% Call
45 SIMPLEX TRADING, LLC 108,146 2,286,000 0.23%
46 CREDIT SUISSE AG/ 101,869 2,154,000 0.22%
47 BlackRock Fund Advisors 101,758 2,151,000 0.22%
48 BlackRock Institutional Trust Company, N.A. 98,330 2,079,000 0.21%
49 TT INTERNATIONAL 88,650 1,874,000 0.19% SH
50 GUGGENHEIM CAPITAL LLC 88,530 1,871,000 0.19%
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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.