IAS is no longer listed. Its last trade on record was Dec 24, 2025. The price and figures on this page are from its last trading day and final filings, and are no longer updated.
Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in IAS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | HUNTINGTON NATIONAL BANK | 1 | $10 | 0.0% | 0.000% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in IAS — a direct measure of their conviction.
Filings activity in IAS during Q2 2026, grouped by how each filer changed its position.
No new institutional buyers in this quarter.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 1 | 50% | 0.00% | 0.01 pp | $0M | 100% |
| Q1 2026 | 2 | 33% | 0.01% | +0.01 pp | $0M | +5286% |
| Q4 2025 | 3 | 98% | 0.00% | 97.40 pp | $0M | 100% |
| Q3 2025 | 167 | +0.0% | 97.40% | +0.44 pp | $1.64B | +23% |
| Q2 2025 | 167 | 9.2% | 96.96% | +0.73 pp | $1.33B | +4.5% |
| Q1 2025 | 184 | +14% | 96.23% | +0.87 pp | $1.27B | 21% |
| Q4 2024 | 161 | 3.6% | 95.36% | +0.81 pp | $1.62B | 1.8% |
| Q3 2024 | 167 | — | 94.55% | — | $1.65B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying IAS stock.
Based on Q2 2026 13F filings, institutional ownership of Integral Ad Science Holding Corp. stands at 0.0%, held across 1 reporting institutions.
HUNTINGTON NATIONAL BANK is the largest reported institutional holder of IAS, with approximately 1 shares worth $0.00B as of Q2 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of IAS.
Our composite Smart Money Score for IAS is 18 out of 100 (Heavy Distribution). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
0 institutions opened new positions in IAS during Q2 2026, while 1 fully exited. 0 added to existing positions and 0 trimmed.
IAS institutional ownership fell by 0.01 percentage points quarter-over-quarter, with a net change of -1 holders.
The top 10 institutions account for 100.0% of all reported 13F value in IAS, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Integral Ad Science Holding Corp. (IAS) Institutional Ownership