Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ONON held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 24.1M | $819.2M | -18.9% | 7.224% | 0.04% |
| 2 | MORGAN STANLEY | 22.5M | $764.3M | -6.9% | 6.740% | 0.05% |
| 3 | PLATINUM PARAMOUNT INVESTMENT LTD. | 11.3M | $384.8M | — | 3.394% | 55.84% |
| 4 | BAMCO INC /NY/ | 9.7M | $330.5M | +79.7% | 2.914% | 1.00% |
| 5 | UBS Group AG | 8.6M | $294.0M | +74.2% | 2.593% | 0.04% |
| 6 | Sinvest Investments II Ltd. | 8.4M | $285.8M | 0.0% | 2.520% | 100.00% |
| 7 | ALLIANCEBERNSTEIN L.P. | 5.7M | $264.6M | -48.6% | 1.708% | 0.09% |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 7.0M | $239.2M | -20.3% | 2.109% | 0.03% |
| 9 | Ilex Capital Partners (UK) LLP | 6.6M | $224.1M | — | 1.976% | 5.52% |
| 10 | SANDS CAPITAL MANAGEMENT, LLC | 6.3M | $215.2M | -4.7% | 1.898% | 0.84% |
| 11 | BlackRock, Inc. | 5.8M | $196.1M | -0.0% | 1.729% | 0.00% |
| 12 | AMERICAN CENTURY COMPANIES INC | 2.9M | $100.2M | -7.3% | 0.883% | 0.05% |
| 13 | GOLDMAN SACHS GROUP INC | 2.9M | $98.4M | +149.8% | 0.867% | 0.01% |
| 14 | WELLINGTON MANAGEMENT GROUP LLP | 2.7M | $91.5M | -5.5% | 0.807% | 0.02% |
| 15 | AMERIPRISE FINANCIAL INC | 2.6M | $86.3M | -14.9% | 0.780% | 0.02% |
| 16 | STATE STREET CORP | 2.5M | $86.0M | +4.2% | 0.759% | 0.00% |
| 17 | FEDERATED HERMES, INC. | 2.1M | $73.1M | +141.4% | 0.645% | 0.12% |
| 18 | Holocene Advisors, LP | 2.1M | $71.9M | -11.9% | 0.634% | 0.17% |
| 19 | Clearbridge Investments, LLC | 2.0M | $67.0M | -9.7% | 0.591% | 0.06% |
| 20 | BARCLAYS PLC | 2.0M | $66.6M | -51.8% | 0.588% | 0.03% |
| 21 | JENNISON ASSOCIATES LLC | 2.0M | $66.6M | -27.5% | 0.587% | 0.05% |
| 22 | Walleye Trading LLC | 1.8M | $61.2M | — | 0.540% | 0.16% |
| 23 | FRANKLIN RESOURCES INC | 1.8M | $60.9M | -15.8% | 0.537% | 0.01% |
| 24 | MILLENNIUM MANAGEMENT LLC | 1.7M | $59.0M | — | 0.520% | 0.04% |
| 25 | FengHe Fund Management Pte. Ltd. | 1.7M | $57.8M | -44.5% | 0.510% | 7.99% |
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 ONON — a direct measure of their conviction.
Filings activity in ONON during Q1 2026, grouped by how each filer changed its position.
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 |
|---|---|---|---|---|---|---|
| Q1 2026 | 488 | 2.8% | 52.62% | 18.75 pp | $6.77B | 26% |
| Q4 2025 | 502 | +6.1% | 71.37% | +11.45 pp | $9.18B | +19% |
| Q3 2025 | 473 | 2.5% | 59.92% | 15.47 pp | $7.71B | 21% |
| Q2 2025 | 485 | +6.8% | 75.39% | +20.52 pp | $9.70B | +37% |
| Q1 2025 | 454 | 0.2% | 54.87% | 15.50 pp | $7.06B | 22% |
| Q4 2024 | 455 | +15% | 70.37% | +3.11 pp | $9.05B | +4.6% |
| Q3 2024 | 397 | +9.7% | 67.26% | +13.95 pp | $8.65B | +26% |
| Q2 2024 | 362 | — | 53.31% | — | $6.86B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 14, 2026 | Bernhard Olivier | Buy | 9K | $35.97 | $329K |
| May 14, 2026 | Allemann David Michael | Buy | 9K | $35.97 | $329K |
Quick answers to the most common questions about buying ONON stock.
Based on Q1 2026 13F filings, institutional ownership of On Holding AG stands at 52.6%, held across 488 reporting institutions.
FMR LLC is the largest reported institutional holder of ONON, with approximately 24,079,437 shares worth $0.82B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of ONON, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for ONON is 40 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
102 institutions opened new positions in ONON during Q1 2026, while 116 fully exited. 62 added to existing positions and 322 trimmed.
ONON institutional ownership fell by 18.75 percentage points quarter-over-quarter, with a net change of -14 holders.
The top 10 institutions account for 56.5% of all reported 13F value in ONON, and the top 25 account for 74.8%.
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.
On Holding AG (ONON) Institutional Ownership