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
276
$391K
277
$387K
278
$381K
279
$374K
280
$367K
281
$363K
282
$357K
283
$352K
284
$348K
285
$340K
286
$323K
287
$321K
288
$317K
289
$309K
290
$301K
291
$297K
292
$297K
293
$289K
294
$286K
295
$279K
296
$279K
297
$278K
298
$273K
299
$271K
300
$262K