394 hedge funds and large institutions have $5.23B invested in Ameren in 2013 Q3 according to their latest regulatory filings, with 54 funds opening new positions, 129 increasing their positions, 151 reducing their positions, and 29 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more funds holding

Funds holding:

more capital invested

Capital invested by funds: $ → $

more ownership

Funds ownership:

15% less repeat investments, than reductions

Existing positions increased: 129 | Existing positions reduced: 151

28% less call options, than puts

Call options by funds: $6.06M | Put options by funds: $8.4M

50% less funds holding in top 10

Funds holding in top 10: 21 (-1)

Holders
394
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$6.06M
Puts
$8.4M
Net Calls
Net Calls Change

Top Buyers

1 +$94.2M
2 +$92.1M
3 +$65.5M
4
Neuberger Berman Group
Neuberger Berman Group
New York
+$65.2M
5
Citadel Advisors
Citadel Advisors
Florida
+$36.5M

Top Sellers

1 -$86.2M
2 -$46.1M
3 -$38M
4
Renaissance Technologies
Renaissance Technologies
New York
-$34.2M
5
LM
Luminus Management
Texas
-$34M
Name Holding Trade Value Shares
Change
Change in
Stake
251
$662K
252
$662K
253
$650K
254
$637K
255
$628K
256
$595K
257
$592K
258
$587K
259
$573K
260
$569K
261
$561K
262
$557K
263
$543K
264
$515K
265
$510K
266
$488K
267
$476K
268
$470K
269
$447K
270
$437K
271
$433K
272
$431K
273
$430K
274
$404K
275
$401K