Innospec Inc.
US ˙ NasdaqGS ˙ US45768S1050

SecurityIOSP / Innospec Inc.
InstitutionCreative Planning
Latest Disclosed Ownership37,635 shares
Latest Disclosed Value $ 2,748,108
Creative Planning reports 15.79% decrease in ownership of IOSP / Innospec Inc.

On May 12, 2026 - Creative Planning filed a 13F-HR form disclosing ownership of 37,635 shares of Innospec Inc. (US:IOSP) valued at $2,748,108 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 44,693 shares of Innospec Inc.. This represents a change in shares of -15.79% during the quarter. The current value of the position is $3,033,381 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F INNOSPEC COM 45768S105 37,635 -7,058 -15.79 2,748 -19.65 0.0019
2026-02-17 2025-12-31 13F INNOSPEC COM 45768S105 44,693 31,062 227.88 3,421 225.40 0.0024
2025-11-14 2025-09-30 13F INNOSPEC COM 45768S105 13,631 9,616 239.50 1,052 211.87 0.0008
2025-08-08 2025-06-30 13F INNOSPEC COM 45768S105 4,015 -1,292 -24.35 338 -32.87 0.0003
2025-05-15 2025-03-31 13F INNOSPEC COM 45768S105 5,307 560 11.80 503 -3.83 0.0005
2025-02-14 2024-12-31 13F INNOSPEC COM 45768S105 4,747 1,340 39.33 522 35.58 0.0005
2024-10-11 2024-09-30 13F INNOSPEC COM 45768S105 3,407 -1,355 -28.45 385 -34.52 0.0004
2024-08-15 2024-06-30 13F INNOSPEC COM 45768S105 4,762 195 4.27 589 0.00 0.0006
2024-05-13 2024-03-31 13F INNOSPEC COM 45768S105 4,567 1,583 53.05 589 60.22 0.0007
2024-02-14 2023-12-31 13F INNOSPEC COM 45768S105 2,984 515 20.86 368 45.63 0.0007
2023-11-16 2023-09-30 13F INNOSPEC COM 45768S105 2,469 408 19.80 252 21.74 0.0003
2023-07-21 2023-06-30 13F INNOSPEC COM 45768S105 2,061 2,061 207 0.0003
2021-04-30 2021-03-31 13F INNOSPEC COM 45768S105 0 -4,126 -100.00 0 -100.00
2021-01-29 2020-12-31 13F INNOSPEC COM 45768S105 4,126 0 0.00 374 43.30 0.0008
2020-11-05 2020-09-30 13F INNOSPEC COM 45768S105 4,126 -500 -10.81 261 -26.89 0.0007
2020-07-23 2020-06-30 13F INNOSPEC COM 45768S105 4,626 0 0.00 357 11.21 0.0010
2020-05-05 2020-03-31 13F INNOSPEC COM 45768S105 4,626 -1,217 -20.83 321 -46.85 0.0011
2020-01-30 2019-12-31 13F INNOSPEC COM 45768S105 5,843 1 0.02 604 15.93 0.0018
2019-11-01 2019-09-30 13F INNOSPEC COM 45768S105 5,842 -5,034 -46.29 521 -47.48 0.0017
2019-07-26 2019-06-30 13F INNOSPEC COM 45768S105 10,876 3 0.03 992 9.49 0.0033
2019-04-24 2019-03-31 13F INNOSPEC COM 45768S105 10,873 -2,832 -20.66 906 7.09 0.0033
2019-02-12 2018-12-31 13F/A-1 INNOSPEC COM 45768S105 13,705 -1,497 -9.85 846 -27.51 0.0035
2019-02-01 2018-12-31 13F INNOSPEC COM 45768S105 13,705 -1,497 846
2018-10-25 2018-09-30 13F INNOSPEC COM 45768S105 15,202 0 0.00 1,167 0.26 0.0043
2018-07-20 2018-06-30 13F INNOSPEC COM 45768S105 15,202 15,202 1,164 0.0046
2017-10-17 2017-09-30 13F INNOSPEC COM 45768S105 0 -200 -100.00 0 -100.00
2017-07-12 2017-06-30 13F INNOSPEC COM 45768S105 200 0 0.00 13 0.00 0.0001
2017-04-07 2017-03-31 13F INNOSPEC COM 45768S105 200 -100 -33.33 13 -38.10 0.0001
2017-01-09 2016-12-31 13F INNOSPEC COM 45768S105 300 0 0.00 21 16.67 0.0001
2016-10-12 2016-09-30 13F INNOSPEC COM 45768S105 300 192 177.78 18 260.00 0.0001
2016-07-12 2016-06-30 13F INNOSPEC COM 45768S105 108 100 1,250.00 5 0.0000
2016-04-08 2016-03-31 13F INNOSPEC COM 45768S105 8 8 0 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.