Affymax Inc: Ownership

Ownership Information
Shares Outstanding 23.00 Mil
Institutional Ownership (%)52.77
Top 10 Institutions (%)37.00
Mutual Fund Ownership (%)2.10
5%/Insider Ownership (%)23.63
Float (%)76.37
Ownership Activity
Description# of HoldersShares
Total Positions 8212,136,363
New Positions230
Soldout Positions140
Net Position Change231,862,843
Buyers534,232,462
Sellers30-2,369,619
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Institution Name Shs Held Shs Chg %Chg $Chg* %Out %Port Rpt Date
Credit Suisse Securities (USA) LLC 2,229,193 -13,609 -0.6 11,920,580 9.6 0.1 09-30-09
MPM Capital, L.L.C. 1,600,469 0 0.0 1,360,399 6.9 36.1 12-31-09
Sectoral Asset Management Inc. 1,281,559 1,208,748 1,660.1 29,274,538 5.5 1.0 09-30-09
HealthCor Management, L.P. 700,000 -650,000 -48.1 -8,157,500 3.0 0.5 09-30-09
BlackRock Institutional Trust Company, N.A. 673,650 183,522 37.4 7,060,440 2.9 0.0 09-30-09
Bridger Management, LLC 501,050 202,551 67.9 6,468,748 2.2 0.6 09-30-09
Vanguard Group, Inc. 452,376 80,381 21.6 3,951,395 2.0 0.0 09-30-09
Wellington Management Company, LLP 399,968 12,800 3.3 2,419,730 1.7 0.0 09-30-09
Dimensional Fund Advisors, LP 372,804 200,802 116.7 5,736,291 1.6 0.0 09-30-09
Visium Capital Management 300,000 300,000 100.0 7,167,000 1.3 0.8 09-30-09
Pictet Asset Management Ltd. 262,400 262,400 100.0 6,268,736 1.1 0.0 09-30-09
Nomura Asset Management Co., Ltd. 255,900 255,900 100.0 6,113,451 1.1 0.1 09-30-09
State Street Global Advisors (US) 245,386 80,775 49.1 2,828,491 1.1 0.0 09-30-09
Invesco PowerShares Capital Management LLC 225,942 225,783 142,001.9 5,394,824 1.0 0.0 09-30-09
UBS Global Asset Management (Switzerland) 172,525 172,525 100.0 4,121,622 0.7 0.0 09-30-09
*Category Headings:
Shs Held - shares held at report date
Shs Chg - position change within reporting period
%Chg - % change
$Chg - market value of the position change
%Out - % of shares outstanding
%Port - % Portfolio
Rpt Date - report date
Page generated 2/10/2010 5:34 AM Eastern Time