ONON · Insider trading · 13F holders · Congress trades
On Holding AG (ONON)
Who is buying and selling ONON: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 43
- Insider buys, 90 days
- $4.0M
- Insider sales, 90 days
- $60K
- Congress trades, 12 months
- 2
ONON at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 4 ONON insiders filed 2 open-market purchases worth $4.0M and 2 sales worth $60K on SEC Form 4.
- 43 13F filers hold ONON among their 50 largest positions, worth $2.0B combined, including Stephen Mandel, Michael Gelband and Bill Gates. The biggest bets by portfolio weight are APEIRON CAPITAL Ltd (18.1%), Darwins River Capital, LP (6.9%) and Pertento Partners LLP (5.7%). In their latest 13Fs, 6 managers opened a new position and 13 added to one.
- Members of Congress have disclosed 2 ONON trades since 2025, 1 purchase and 1 sale in the past year; the latest was Angus S. King, Jr. (I-ME), selling $1K–15K on Feb 13, 2026.
- ONON last closed at $32.80 on Oct 29, 2026.
ONON insider trading
Between Aug 1, 2026 and Oct 29, 2026, 4 ONON insiders filed 2 open-market purchases worth $4.0M and 2 sales worth $60K on SEC Form 4.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 9, 2026 | Maguire Scott Andrew | COO | Sale | 1,475 | $27.74 | $41K | SEC |
| Sep 9, 2026 | Sluis Frank | CFO | Sale | 687 | $27.74 | $19K | SEC |
| Aug 17, 2026 | Bernhard Olivier | Executive Officer, Director | Buy | 65,000 | $30.67 | $2.0M | SEC |
| Aug 17, 2026 | Coppetti Caspar Felix | Executive Officer & Co-CEO, Director | Buy | 65,000 | $30.67 | $2.0M | SEC |
Who owns ONON? Hedge funds and superinvestors
43 13F filers hold ONON among their 50 largest positions, worth $2.0B combined, including Stephen Mandel, Michael Gelband and Bill Gates. The biggest bets by portfolio weight are APEIRON CAPITAL Ltd (18.1%), Darwins River Capital, LP (6.9%) and Pertento Partners LLP (5.7%). In their latest 13Fs, 6 managers opened a new position and 13 added to one.
Superinvestors holding ONON: Stephen Mandel 2.9% · Michael Gelband 0.4% · Bill Gates 0.1%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Bamco Inc /ny/Investment manager | 0.9% | $599.7M | 16,929,770 | +74.3% shares | Q2 2026 |
| Stephen MandelSuperinvestor · Hedge fund | 2.9% | $470.4M | 13,280,030 | New | Q2 2026 |
| Sands Capital Management, LLCHedge fund | 1.0% | $265.1M | 7,485,043 | +18.3% shares | Q2 2026 |
| Ilex Capital Partners (UK) LLPHedge fund | 2.2% | $107.3M | 3,028,301 | -54.0% shares | Q2 2026 |
| Pertento Partners LLPHedge fund | 5.7% | $78.9M | 2,228,412 | +614.1% shares | Q2 2026 |
| Freestone Grove Partners LPHedge fund | 0.5% | $71.7M | 2,023,442 | — | Q2 2026 |
| Michael GelbandHedge fund | 0.4% | $38.4M | 1,085,247 | — | Q2 2026 |
| Ranmore Fund Management LtdAsset manager | 3.6% | $32.3M | 1,090,000 | New | Q3 2026 |
| APEIRON CAPITAL LtdAsset manager | 18.1% | $28.2M | 795,852 | -20.1% shares | Q2 2026 |
| Bwcp, LPHedge fund | 3.7% | $25.7M | 724,443 | +6.4% shares | Q2 2026 |
| Hook Mill Capital Partners, LPHedge fund | 2.2% | $23.9M | 673,744 | New | Q2 2026 |
| ThornTree Capital Partners LPHedge fund | 3.2% | $23.7M | 668,771 | -44.1% shares | Q2 2026 |
| Villere St Denis J & Co LLCInvestment manager | 2.5% | $20.7M | 583,236 | -5.3% shares | Q2 2026 |
| Mane Global Capital Management LPAsset manager | 1.6% | $19.3M | 543,622 | +7.6% shares | Q2 2026 |
| Bill GatesSuperinvestor · Endowment & foundation | 0.1% | $17.7M | 500,000 | +0.0% shares | Q2 2026 |
| Hodges Capital Management Inc.Asset manager | 1.0% | $15.5M | 436,735 | +23.1% shares | Q2 2026 |
| Abu Dhabi Investment Council Co P.J.S.CSovereign wealth fund | 2.0% | $14.3M | 403,352 | +0.0% shares | Q2 2026 |
| Arnhold LLCHedge fund | 1.0% | $13.8M | 465,100 | +19.0% shares | Q3 2026 |
| Cinctive Capital Management LPHedge fund | 0.5% | $13.5M | 381,805 | +47.8% shares | Q2 2026 |
| Darwins River Capital, LPHedge fund | 6.9% | $12.6M | 355,720 | +44.9% shares | Q2 2026 |
| Manchester Global Management (UK) LtdHedge fund | 1.3% | $11.4M | 322,239 | -38.3% shares | Q2 2026 |
| Quinn Opportunity Partners LLCHedge fund | 0.5% | $11.1M | 314,655 | — | Q2 2026 |
| Towarzystwo Funduszy Inwestycyjnych Pzu SAInvestment manager | 2.8% | $9.9M | 280,142 | +0.0% shares | Q2 2026 |
| Tabor Asset Management, LPInstitutional asset manager | 2.2% | $7.1M | 199,776 | New | Q2 2026 |
| Bulltick Wealth Management, LLCWealth manager | 1.3% | $6.4M | 182,041 | -9.0% shares | Q2 2026 |
| Unison Asset Management LLCHedge fund | 2.1% | $5.3M | 148,367 | +28.2% shares | Q2 2026 |
| Sciencast Management LPHedge fund | 0.9% | $4.1M | 116,963 | — | Q2 2026 |
| Katamaran Capital LLPAsset manager | 4.6% | $4.1M | 136,796 | New | Q3 2026 |
| B.A. Schrock Wealth Management, Inc.Wealth manager | 1.5% | $4.0M | 132,140 | — | Q3 2026 |
| SPX Gestao de Recursos LtdaInvestment manager | 0.4% | $3.8M | 108,412 | — | Q2 2026 |
The 30 largest of 43 positions, by value. Each manager counts with its latest 13F (Q3 2026: 9, Q2 2026: 34). Screen ONON in the grand portfolio →
ONON stock trades by members of Congress
Members of Congress have disclosed 2 ONON trades since 2025, 1 purchase and 1 sale in the past year; the latest was Angus S. King, Jr. (I-ME), selling $1K–15K on Feb 13, 2026.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Mar 24, 2026 | Angus S. King, Jr.I-ME · Senate | Sale | $1K–15K | Feb 13, 2026 | -25.4% |
| Aug 18, 2025 | Angus S. King, Jr.I-ME · Senate | Buy | $1K–15K | Jul 21, 2025 | -36.5% |
ONON questions and answers
Are insiders buying ONON stock?
Between Aug 1, 2026 and Oct 29, 2026, 4 ONON insiders filed 2 open-market purchases worth $4.0M and 2 sales worth $60K on SEC Form 4.
Which hedge funds own ONON?
43 13F filers hold ONON among their 50 largest positions, worth $2.0B combined, including Stephen Mandel, Michael Gelband and Bill Gates. The biggest bets by portfolio weight are APEIRON CAPITAL Ltd (18.1%), Darwins River Capital, LP (6.9%) and Pertento Partners LLP (5.7%). In their latest 13Fs, 6 managers opened a new position and 13 added to one.
Has Congress traded ONON?
Members of Congress have disclosed 2 ONON trades since 2025, 1 purchase and 1 sale in the past year; the latest was Angus S. King, Jr. (I-ME), selling $1K–15K on Feb 13, 2026.
Who is the largest holder of ONON?
Among 13F filers, Bamco Inc /ny/ reports the largest ONON position, $599.7M (16,929,770 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is APEIRON CAPITAL Ltd's: 18.1% of its portfolio.
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