111 hedge funds and large institutions have $126M invested in Geron in 2016 Q4 according to their latest regulatory filings, with 7 funds opening new positions, 39 increasing their positions, 31 reducing their positions, and 13 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
111
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$2.11M
Puts
$1.36M
Net Calls
Net Calls Change

Top Buyers

1 +$1.66M
2 +$1.56M
3 +$934K
4
Citigroup
Citigroup
New York
+$749K
5
Millennium Management
Millennium Management
New York
+$638K

Top Sellers

1 -$1.17M
2 -$886K
3 -$724K
4
SIM
Spark Investment Management
New York
-$377K
5
Citadel Advisors
Citadel Advisors
Florida
-$369K
Name Holding Trade Value Shares
Change
Change in
Stake
26
$300K
27
$299K
28
$287K
29
$268K
30
$257K
31
$254K
32
$254K
33
$253K
34
$246K
35
$244K
36
$233K
37
$233K
38
$229K
39
$196K
40
$194K
41
$180K
42
$179K
43
$174K
44
$165K
45
$160K
46
$150K
47
$149K
48
$147K
49
$143K
50
$134K