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
76
$210K
77
$204K
78
$166K
79
$166K
80
$153K
81
$151K
82
$137K
83
$133K
84
$120K
85
$116K
86
$98K
87
$96K
88
$94K
89
$94K
90
$88K
91
$87K
92
$84K
93
$81K
94
$78K
95
$77K
96
$73.4K
97
$71K
98
$62K
99
$59K
100
$59K