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
JPMorgan Chase & Co
JPMorgan Chase & Co
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
1
$26.9M
2
$24.2M
3
$19.6M
4
$18.3M
5
$18.3M
6
$16.1M
7
$13.2M
8
$9.89M
9
$8.8M
10
$8.76M
11
$8.38M
12
$7.11M
13
$6.1M
14
$4.74M
15
$3.87M
16
$3.81M
17
$3.5M
18
$3.47M
19
$3.27M
20
$3.2M
21
$3.05M
22
$2.95M
23
$2.92M
24
$2.49M
25
$2.09M