Calamos S&p 500 Alt Sept
$28.07-0.2%
-$1.4M
Net Activity
-11.72% total shares
Institutions Holding
18
Popularity Rank
#8651
Avg Weight
0.06%
Total Value
$20.6M
18 institutions currently hold CPST, with 4 net buyers and 12 net sellers this quarter.
Institutional Moves (Q2 2026)
Significantly Decreased
Based on recent trading activity
Net Selling Institutions
12
Net Buying Institutions
4
Top 5 by Value
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Across its top 18 institutional holders, CPST's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 9/100, avg. turnover score 23/100).
CPST ranks #8651 out of 37505 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
18 institutions disclose a position in CPST, but none treat it as a major bet — even Camelot Portfolios, LLC, its most concentrated holder, allocates just 0.5% of its own portfolio to it.
Calamos Wealth Management LLC has trimmed its CPST position for two straight quarters, cutting it by $673.7K while still holding $2.7M.
CPST is down 0.2% today, and institutions have been net sellers of $1.4M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
+$1.9M
Total Buy Value
$4.6M
Total Sell Value
4
Net Buyers
12
Net Sellers
CPST
Q2 2026
Top 5 Institutional Movers
-$2.1M
-$770.5K
+$557.6K
-$446.5K
CPST does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
No Form 8-K filings for this ticker
12811T886
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,248
Total reported value
$2.2T
3234 13F institutions increased their position this quarter
Institutions Holding
5,996
Total reported value
$3.6T
3037 13F institutions increased their position this quarter
Institutions Holding
6,159
Total reported value
$1.8T
2975 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,067
Total reported value
$377.7B
Held by 4067 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
6,147
Total reported value
$2.9T
Held by 6147 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,812
Total reported value
$1.8T
Held by 5812 institutions — one of the most-tracked stocks on AlphaSMO
Access CPST's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/CPSTCLI
npx alphasmo stocks get CPST