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
26
$1.91M
27
$1.82M
28
$1.66M
29
$1.61M
30
$1.56M
31
$1.5M
32
$1.24M
33
$1.15M
34
$1.12M
35
$1.11M
36
$1.11M
37
$1.09M
38
$1.07M
39
$1.04M
40
$1.04M
41
$957K
42
$934K
43
$920K
44
$830K
45
$798K
46
$793K
47
$783K
48
$734K
49
$698K
50
$658K