Innospec Inc
$97.10-0.3%
+$199.0M
Net Activity
+9.00% total shares
Institutions Holding
281
Popularity Rank
#2264
Avg Weight
0.06%
Total Value
$2.1B
Market Cap
$2.4B
281 institutions currently hold IOSP, with 151 net buyers and 126 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
126
Net Buying Institutions
151
Top 5 by Value
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Across its top 20 institutional holders, IOSP's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 37/100).
IOSP ranks #2264 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
IOSP is a top-conviction position for Western Standard LLC — at 6.5% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in IOSP belongs to BlackRock, Inc., but the position matters far more to Western Standard LLC, who has 6.5% 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.
Deprince Race & Zollo Inc has added to its IOSP position for two straight quarters, increasing it by $3.5M to reach $8.5M today.
Y-Intercept has trimmed its IOSP position for two straight quarters, cutting it by $2.1M while still holding $312.2K.
IOSP is down 0.3% today, but institutions show net buying of $199.0M this quarter — a divergence between today's price move and the underlying institutional flow.
IOSP posted net income of $117.5M over the trailing twelve months, and currently trades at a P/E of 20.7.
+$273.6M
Total Buy Value
$252.0M
Total Sell Value
151
Net Buyers
126
Net Sellers
IOSP
Q2 2026
Top 5 Institutional Movers
IOSP 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
0
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Allspring Global Investments Holdings, LLC | 13G/A | 2026-10-07 | 4.7% |
| Allspring Global Investments Holdings, LLC | 13G/A | 2026-07-31 | 7.7% |
1
Filings (14d)
Innospec Inc. filed an 8-K on August 4, 2026, to announce that it issued a press release covering its financial results for the quarter ended June 30, 2026. The document itself doesn't contain any actual numbers — the press release (Exhibit 99.1) is attached separately, and the filing is marked as “furnished” rather than “filed,” a standard move to avoid SEC liability for forward-looking statements. David B. Jones signed off on the report the next day.
View Full Filing (SEC EDGAR)45768S105
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
4,146
Total reported value
$257.5B
Held by 4146 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,137
Total reported value
$279.7B
Held by 4137 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,136
Total reported value
$649.5B
Held by 4136 institutions — one of the most-tracked stocks on AlphaSMO
Access IOSP's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/IOSPCLI
npx alphasmo stocks get IOSP