ZWJ INVESTMENT COUNSEL INC IOSP — INNOSPEC INC

Ownership history in ZWJ INVESTMENT COUNSEL INC  ·  43 quarters on record

AI Ownership Summary

ZWJ INVESTMENT COUNSEL INC reported INNOSPEC INC (IOSP) in 43 quarterly 13F filings from 2024 Q2 through 2026 Q2. Peak portfolio weight reached 0.29% in 2026 Q2. The latest visible filing shows IOSP at 0.29% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this IOSP ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was ZWJ INVESTMENT COUNSEL INC's position in INNOSPEC INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q2

IOSP was reported at 0.29% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.29% in 2026 Q2

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q2 to 2026 Q2

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

IOSP stock page ZWJ INVESTMENT COUNSEL INC fund profile ZWJ INVESTMENT COUNSEL INC full holdings
How ZWJ INVESTMENT COUNSEL INC held IOSP — position size vs. price
% of Fund (quarterly)    IOSP price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 ADDED — — — 108,502 +4,715 +4.5% 0.29% $8.8M 2026-07-16 $85.46
2026 Q1 ADDED — — — 103,787 +9,252 +9.8% 0.27% $7.6M 2026-04-24 $76.25
2025 Q4 ADDED — — — 94,535 +49,705 +110.9% 0.26% $7.2M 2026-01-23 $79.89
2025 Q3 ADDED — — — 44,830 +5,410 +13.7% 0.12% $3.5M 2025-10-15 $73.17
2025 Q2 REDUCED 14.9% -8.3% ✅ 39,420 -6,891 -14.9% 0.12% $3.3M 2025-07-21 $81.58
2025 Q1 ADDED — — — 46,311 +2,885 +6.6% 0.18% $4.4M 2025-04-28 $86.86
2024 Q4 ADDED — — — 43,426 +279 +0.6% 0.20% $4.8M 2025-01-16 $109.20
2024 Q3 ADDED — — — 43,147 +1,504 +3.6% 0.20% $4.9M 2024-10-16 $111.53
2024 Q2 ADDED — — — 41,643 +1,112 +2.7% 0.23% $5.1M 2024-07-19 $121.43
34 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding IOSP

As of 2026 Q2 — sorted by position size

Western Standard LLC 3Y 7Y 6.53% FIRST WILSHIRE SECURITIES MANAGEMENT INC 3Y 7Y 2.47% CM Management, LLC 3Y 1.65% Round Hill Asset Management 3Y 7Y 0.61% SG Capital Management LLC 3Y 7Y 0.48% Leeward Investments, LLC - MA 3Y 0.46% Numerai GP LLC 3Y 0.45% MQS Management LLC 3Y 0.36% Huber Capital Management LLC 3Y 7Y 0.35% Atom Investors LP 3Y 7Y 0.3%

FAQ About ZWJ INVESTMENT COUNSEL INC and IOSP

These are the practical questions this page is built to answer before you even open the full history table.

How long has ZWJ INVESTMENT COUNSEL INC reported owning IOSP?

ZWJ INVESTMENT COUNSEL INC reported IOSP across 9 quarterly 13F filings, from 2024 Q2 through 2026 Q2.

What was the largest reported IOSP position in ZWJ INVESTMENT COUNSEL INC's portfolio?

The largest reported portfolio weight for IOSP was 0.29% in 2026 Q2.

What is the latest reported IOSP position on this page?

The most recent filing on this page is 2026 Q2, when ZWJ INVESTMENT COUNSEL INC reported 108,502 shares, equal to 0.29% of portfolio, with an estimated market value of $8.8M.

What does the chart on this IOSP ownership page compare?

The chart compares ZWJ INVESTMENT COUNSEL INC's quarterly IOSP portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did ZWJ INVESTMENT COUNSEL INC time their IOSP position?

Based on 13F filing dates vs. subsequent IOSP price moves, ZWJ INVESTMENT COUNSEL INC correctly timed 22 out of 42 reported position changes (52%). The annualised alpha on IOSP relative to SPY over the holding period was +18.3%.

← Back to ZWJ INVESTMENT COUNSEL INC Holdings