Ranked by reported Q2 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 | MORGAN STANLEY | 20.4M | $724.2M | -9.0% | 6.134% | 0.04% |
| 2 | BAMCO INC /NY/ | 16.9M | $599.7M | +74.3% | 5.079% | 0.90% |
| 3 | FMR LLC | 16.0M | $568.1M | -33.4% | 4.812% | 0.02% |
| 4 | LONE PINE CAPITAL LLC | 13.3M | $470.4M | — | 3.984% | 2.88% |
| 5 | PeakShares LLC | 13K | $446.9M | +2.7% | 0.004% | 0.33% |
| 6 | PLATINUM PARAMOUNT INVESTMENT LTD. | 11.3M | $400.7M | 0.0% | 3.394% | 56.94% |
| 7 | CITADEL ADVISORS LLC | 9.4M | $331.9M | +60.6% | 2.811% | 0.02% |
| 8 | JANE STREET GROUP, LLC | 8.5M | $301.2M | -11.0% | 2.551% | 0.02% |
| 9 | Sinvest Investments II Ltd. | 8.4M | $297.5M | 0.0% | 2.520% | 100.00% |
| 10 | SANDS CAPITAL MANAGEMENT, LLC | 7.5M | $265.1M | +18.3% | 2.245% | 0.98% |
| 11 | UBS Group AG | 6.3M | $223.2M | -27.1% | 1.891% | 0.03% |
| 12 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 6.1M | $216.6M | -13.1% | 1.834% | 0.02% |
| 13 | BlackRock, Inc. | 5.5M | $196.1M | -3.9% | 1.661% | 0.00% |
| 14 | MARSHALL WACE, LLP | 3.5M | $123.7M | +176.3% | 1.048% | 0.10% |
| 15 | GOLDMAN SACHS GROUP INC | 3.5M | $123.2M | +20.3% | 1.043% | 0.01% |
| 16 | AMERIPRISE FINANCIAL INC | 3.2M | $113.0M | +23.6% | 0.964% | 0.02% |
| 17 | NORGES BANK | 3.2M | $112.8M | — | 0.955% | 0.01% |
| 18 | Ilex Capital Partners (UK) LLP | 3.0M | $107.3M | -54.0% | 0.908% | 2.20% |
| 19 | WELLINGTON MANAGEMENT GROUP LLP | 2.8M | $97.5M | +2.3% | 0.826% | 0.02% |
| 20 | STATE STREET CORP | 2.4M | $86.6M | -3.3% | 0.734% | 0.00% |
| 21 | Pertento Partners LLP | 2.2M | $78.9M | +614.1% | 0.668% | 4.25% |
| 22 | MILLENNIUM MANAGEMENT LLC | 2.1M | $75.1M | +22.2% | 0.636% | 0.03% |
| 23 | Clearbridge Investments, LLC | 2.1M | $74.3M | +6.5% | 0.629% | 0.06% |
| 24 | Freestone Grove Partners LP | 2.0M | $71.7M | +202344100.0% | 0.607% | 0.46% |
| 25 | Walleye Trading LLC | 2.0M | $69.7M | +9.3% | 0.590% | 0.08% |
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 Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new ONON position in Q2 2026
Institutions that fully closed their ONON position in Q2 2026
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 | 497 | 0.2% | 68.53% | +0.64 pp | $8.38B | +10% |
| Q1 2026 | 498 | 4.0% | 67.89% | +0.55 pp | $7.61B | 25% |
| Q4 2025 | 519 | +6.6% | 67.34% | +5.72 pp | $10.17B | +23% |
| Q3 2025 | 487 | +0.4% | 61.62% | +2.59 pp | $8.28B | 15% |
| Q2 2025 | 485 | +6.8% | 59.03% | +7.66 pp | $9.70B | +37% |
| Q1 2025 | 454 | 0.2% | 51.37% | 2.15 pp | $7.06B | 22% |
| Q4 2024 | 455 | +15% | 53.52% | 0.97 pp | $9.05B | +4.6% |
| Q3 2024 | 397 | — | 54.49% | — | $8.65B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator 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 Q2 2026 13F filings, institutional ownership of On Holding AG stands at 68.5%, held across 497 reporting institutions.
MORGAN STANLEY is the largest reported institutional holder of ONON, with approximately 20,447,122 shares worth $0.72B as of Q2 2026.
Yes — 5 widely-followed marquee investors appear among the top 25 institutional holders of ONON, including LONE PINE CAPITAL LLC, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, MILLENNIUM MANAGEMENT LLC.
Our composite Smart Money Score for ONON is 68 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
83 institutions opened new positions in ONON during Q2 2026, while 90 fully exited. 259 added to existing positions and 134 trimmed.
ONON institutional ownership rose by 0.64 percentage points quarter-over-quarter, with a net change of -1 holders.
The top 10 institutions account for 52.6% of all reported 13F value in ONON, and the top 25 account for 73.7%.
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