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Institutional Holdings of PHARMASSET, INC. (VRUS) on 12/31/2011

1. Company Information

Company/StockPHARMASSET, INC. (stock symbol: VRUS)
Funds Ownership248 out of total 3028 funds (8%) own this stock
Funds own total 66,114,257 shares, 88.91% of all outstanding shares
Funds SOLD -3,164,933 shares (-4.57%) in the quarter ended on 12/31/2011

2. Top 20 Funds Held VRUS in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)FMR LLC3,989,430Cut -62.43%0.10%5.37%
2.)STATE STREET CORP2,802,793Added 184.47%0.06%3.77%
3.)VANGUARD GROUP INC2,783,181Cut -19.54%0.06%3.74%
4.)CAPITAL GUARDIAN TRUST CO2,611,041Cut -16.10%2.20%3.51%
5.)PRICE T ROWE ASSOCIATES INC MD 2,517,838Cut -40.71%0.11%3.39%
6.)CAPITAL WORLD INVESTORS2,493,300Cut -66.45%0.12%3.35%
7.)ARROWGRASS CAPITAL PARTNERS (US) LP2,351,465New18.34%3.16%
8.)BLACKROCK INSTITUTIONAL TRUST COMPANY NA2,184,597Added 41.95%0.07%2.94%
9.)HBK INVESTMENTS L P1,900,000New6.80%2.56%
10.)CAPITAL RESEARCH GLOBAL INVESTORS1,854,024Cut -56.32%0.11%2.49%
11.)BLACKROCK FUND ADVISORS1,804,004Added 3.94%0.12%2.43%
12.)BAKER BROS ADVISORS LLC1,569,727Cut -61.65%6.65%2.11%
13.)PAULSON & CO INC1,500,000New1.39%2.02%
14.)SUSQUEHANNA INTERNATIONAL GROUP LLP1,308,500PUTAdded 676.10%0.06%1.76%
15.)D E SHAW & CO INC1,303,330Added 707.69%0.45%1.75%
16.)FARALLON CAPITAL MANAGEMENT LLC1,245,000New3.83%1.67%
17.)HUDSON BAY CAPITAL MANAGEMENT LP1,204,900CALLNew8.68%1.62%
18.)PENTWATER CAPITAL MANAGEMENT LP1,167,248New3.52%1.57%
19.)CAPITAL INTERNATIONAL INC CA 1,070,373Cut -9.80%2.68%1.44%
20.)ALYESKA INVESTMENT GROUP LP1,036,000New3.63%1.39%



3. Top 20 Funds Held VRUS in this Quarter (By % of Portfolio) Add to Yahoo Finance Message Board

No.FundSharesPut/CallActivity(Shr)% Port.% Out. Shrs
1.)TWIN SECURITIES INC126,566New34.65%0.17%
2.)CENTAURUS CAPITAL LP604,100CALLNew34.53%0.81%
3.)TYRUS CAPITAL LLP965,000New19.90%1.30%
4.)JET CAPITAL INVESTORS L P643,000CALLNew19.33%0.86%
5.)ARROWGRASS CAPITAL PARTNERS (US) LP2,351,465New18.34%3.16%
6.)PERCEPTIVE ADVISORS LLC452,000Added 804.00%13.37%0.61%
7.)KS MANAGEMENT CORP57,600New12.33%0.08%
8.)REALM PARTNERS LLC300,000CALLNew11.79%0.40%
9.)REXFORD OFFSHORE L L C9,400New10.41%0.01%
10.)REXFORD HOLDING MANAGEMENT LLC34,700New10.31%0.05%
11.)ROUNDKEEP CAPITAL ADVISORS LLC200,000CALLNew10.17%0.27%
12.)TIRESIAS CAPITAL LTD238,210New9.66%0.32%
13.)MAGNETAR FINANCIAL LLC751,700CALLNew9.05%1.01%
14.)ANGELO GORDON & CO LP NY635,000CALLNew8.82%0.85%
15.)FIRST NEW YORK SECURITIES LLC NY141,500New8.78%0.19%
16.)HUDSON BAY CAPITAL MANAGEMENT LP1,204,900CALLNew8.68%1.62%
17.)ADAR INVESTMENT MANAGEMENT LLC150,000CALLNew8.44%0.20%
18.)HAMBRECHT & QUIST CAPITAL MANAGEMENT LLC306,513Added 19.65%8.27%0.41%
19.)GABELLI SECURITIES INC224,411New8.17%0.30%
20.)HAVENS ADVISORS LLC160,000New8.09%0.22%

4. Top 20 Funds BOUGHT NEW VRUS in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)ARROWGRASS CAPITAL PARTNERS (US) LP2,351,46518.34%3.16%
2.)HBK INVESTMENTS L P1,900,0006.80%2.56%
3.)PAULSON & CO INC1,500,0001.39%2.02%
4.)FARALLON CAPITAL MANAGEMENT LLC1,245,0003.83%1.67%
5.)HUDSON BAY CAPITAL MANAGEMENT LP1,204,900CALL8.68%1.62%
6.)PENTWATER CAPITAL MANAGEMENT LP1,167,2483.52%1.57%
7.)ALYESKA INVESTMENT GROUP LP1,036,0003.63%1.39%
8.)ELLIOTT MANAGEMENT CORP1,007,9364.09%1.36%
9.)TYRUS CAPITAL LLP965,00019.90%1.30%
10.)HUDSON BAY CAPITAL MANAGEMENT LP833,400PUT6.00%1.12%
11.)PENTWATER CAPITAL MANAGEMENT LP798,000PUT2.40%1.07%
12.)CARLSON CAPITAL L P752,1001.40%1.01%
13.)MAGNETAR FINANCIAL LLC751,700CALL9.05%1.01%
14.)JD CAPITAL MANAGEMENT LLC718,200CALL4.44%0.97%
15.)ARBITRAGE & TRADING MANAGEMENT CO656,9002.25%0.88%
16.)JET CAPITAL INVESTORS L P643,000CALL19.33%0.86%
17.)GABELLI FUNDS LLC642,2000.58%0.86%
18.)ANGELO GORDON & CO LP NY635,000CALL8.82%0.85%
19.)MOORE CAPITAL MANAGEMENT LLC615,0662.79%0.83%
20.)CENTAURUS CAPITAL LP604,100CALL34.53%0.81%

5. Top 20 Funds SOLD OUT VRUS in this Quarter (By Shares) Add to Yahoo Finance Message Board

No.FundSharesPut/Call% Port.% Out. Shrs
1.)UBS GLOBAL ASSET MANAGEMENT AMERICAS INC1,713,7930.24%2.30%
2.)JANUS CAPITAL MANAGEMENT LLC1,307,8600.13%1.76%
3.)ARTISAN PARTNERS LIMITED PARTNERSHIP855,4000.26%1.15%
4.)SECTORAL ASSET MANAGEMENT INC836,4743.05%1.12%
5.)WELLINGTON MANAGEMENT CO LLP448,6940.02%0.60%
6.)TURNER INVESTMENT PARTNERS INC431,9310.32%0.58%
7.)TCW GROUP INC270,2550.11%0.36%
8.)FEDERATED INVESTORS INC PA 204,5000.10%0.28%
9.)INDEPENDENCE CAPITAL ASSET PARTNERS LLC194,8134.11%0.26%
10.)PALISADE CAPITAL MANAGEMENT LLC NJ174,3420.57%0.23%
11.)PIONEER INVESTMENT MANAGEMENT INC161,9960.04%0.22%
12.)STATE OF NEW JERSEY COMMON PENSION FUND A160,0000.08%0.22%
13.)OPPENHEIMER FUNDS INC150,2700.03%0.20%
14.)DRIEHAUS CAPITAL MANAGEMENT LLC136,1080.61%0.18%
15.)CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM132,8200.03%0.18%
16.)RIDGEBACK CAPITAL INVESTMENTS LP130,0008.44%0.17%
17.)BAM CAPITAL LLC129,200CALL10.93%0.17%
18.)RCM CAPITAL MANAGEMENT LLC119,4610.06%0.16%
19.)CUPPS CAPITAL MANAGEMENT LLC110,3881.66%0.15%
20.)LOS ANGELES CAPITAL MANAGEMENT & EQUITY RESEARCH INC106,4480.26%0.14%