Ishares S&p 100 ETF
$380.18-1.3%
-$387.7M
Net Activity
-9.06% total shares
Institutions Holding
1029
Popularity Rank
#463
Avg Weight
0.36%
Total Value
$12.6B
1029 institutions currently hold OEF, with 312 net buyers and 481 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Decreased
Based on recent trading activity
Net Selling Institutions
481
Net Buying Institutions
312
Top 5 by Value
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Across its top 20 institutional holders, OEF's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 26/100).
OEF ranks #463 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
OEF is a top-conviction position for Ackerman Asset Management, LLC — at 19.3% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in OEF belongs to Bank Of America CORP /de/, but the position matters far more to Ackerman Asset Management, LLC, who has 19.3% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Wealth Group Ltd has added to its OEF position for two straight quarters, increasing it by $5.5M to reach $23.6M today.
RIA Advisory Group LLC has trimmed its OEF position for two straight quarters, cutting it by $34.4M while still holding $2.3M.
OEF is down 1.3% today, and institutions have been net sellers of $387.7M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
+$753.6M
Total Buy Value
$1.5B
Total Sell Value
312
Net Buyers
481
Net Sellers
OEF
Q2 2026
Top 5 Institutional Movers
+$321.0M
+$264.5M
-$202.4M
+$179.4M
-$174.9M
OEF 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 2026-09-30 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
464287101
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,716
Total reported value
$473.6B
Held by 4716 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,662
Total reported value
$986.0B
Held by 4662 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,610
Total reported value
$529.1B
Held by 4610 institutions — one of the most-tracked stocks on AlphaSMO
Access OEF's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/OEFCLI
npx alphasmo stocks get OEF