139 hedge funds and large institutions have $266M invested in Geron in 2013 Q4 according to their latest regulatory filings, with 52 funds opening new positions, 37 increasing their positions, 33 reducing their positions, and 18 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
139
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
3
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$8.77M
Puts
$1.79M
Net Calls
Net Calls Change

Top Buyers

1 +$16.4M
2 +$8.8M
3 +$7.11M
4
JP Morgan Chase
JP Morgan Chase
New York
+$5.6M
5
DM
Deerfield Management
New York
+$4.74M

Top Sellers

1 -$9.19M
2 -$8.31M
3 -$3.11M
4
BBA
Baker Bros. Advisors
New York
-$2.83M
5
SCA
SAC Capital Advisors
Connecticut
-$2.35M
Name Holding Trade Value Shares
Change
Change in
Stake
101
$59K
102
$58K
103
$53K
104
$52K
105
$52K
106
$51K
107
$48K
108
$47K
109
$47K
110
$47K
111
$43K
112
$24K
113
$24K
114
$24K
115
$24K
116
$23K
117
$22K
118
$21K
119
$18K
120
$16K
121
$15K
122
$12K
123
$12K
124
$11K
125
$11K