Security key
45768S105
- Security type / class
- Equity / Common Stock SH
- Total 13F shares
- 23,876,871
- Total 13F value
- $2,451,393,601
- Share change
- +130,962
- Put/Call ratio
- 2000%
- SEC-reported price per share
- $102.67
- Number of holders
- 218
- Value change
- +$13,429,205
- Number of buys
- 105
- Number of sells
- 93
- Shares outstanding
- 24,577,545
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2023
Institutions
218
Top holders
10
IOSP full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
INNOSPEC INC. SEC filings
INNOSPEC INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 45768S105
Recent filing periods:
Ownership snapshot
Top reported holders of IOSP - INNOSPEC INC. - Common Stock SH (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock Finance, Inc.
Disclosed value leader
BlackRock Finance, Inc.
Comparable rows
15/15
Latest evidence
31 Dec 2022
13F
Lead comparable stake: 16%
Showing 1-6 of 15 holder rows.
Quick read
BlackRock Finance, Inc. leads the comparable SEC ownership view at 16%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock Finance, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock Finance, Inc.
16%
VANGUARD GROUP INC
12%
Allspring Global Investments Hold...
9.9%
WASATCH ADVISORS LP
7.2%
DIMENSIONAL FUND ADVISORS LP
4.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock Finance, Inc. |
13F
Company
|
16%
|
$407,653,990
3,963,193 shares
|
— | 31 Dec 2022 |
| VANGUARD GROUP INC |
13F
Company
|
12%
|
$297,264,681
2,889,993 shares
|
— | 31 Dec 2022 |
| Allspring Global Investments Holdings, LLC |
13F
Company
|
9.9%
|
$251,477,476
2,444,852 shares
|
— | 31 Dec 2022 |
| WASATCH ADVISORS LP |
13F
Company
|
7.2%
|
$182,334,470
1,772,647 shares
|
— | 31 Dec 2022 |
| DIMENSIONAL FUND ADVISORS LP |
13F
Company
|
4.9%
|
$123,197,000
1,197,700 shares
|
— | 31 Dec 2022 |
| VICTORY CAPITAL MANAGEMENT INC |
13F
Company
|
4.2%
|
$105,210,352
1,022,850 shares
|
— | 31 Dec 2022 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2023
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
218
Shares
23,876,871
Rows available
218
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2023 vs Q1 2023 Across Filers
Q1 2023 holders
218
Q1 2023 holders
218
Holder diff
0
| Investor | Q1 2023 Shares | Q1 2023 Shares | Share Diff | Share Chg % | Q1 2023 value | Q1 2023 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend