MDGL · Insider trading · 13F holders · Congress trades
Madrigal Pharmaceuticals, Inc. (MDGL)
Who is buying and selling MDGL: 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
- 35
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $6.6M
- Congress trades, 12 months
- 1
MDGL at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 2 MDGL insiders filed 2 sales worth $6.6M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
- 35 13F filers hold MDGL among their 50 largest positions, worth $6.6B combined, including John Paulson, Behzad Aghazadeh and Julian and Felix Baker. The biggest bets by portfolio weight are Rtw Investments, LP (9.1%), Behzad Aghazadeh (8.8%) and Jones Hill Capital LP (6.0%). In their latest 13Fs, 2 managers opened a new position and 8 added to one.
- Members of Congress have disclosed 1 MDGL trade since 2023, 0 purchases and 1 sale in the past year; the latest was Daniel S. Goldman (D-NY), selling $1K–15K on Apr 10, 2023.
- MDGL last closed at $431.70 on Oct 29, 2026.
MDGL insider trading
Between Aug 1, 2026 and Oct 29, 2026, 2 MDGL insiders filed 2 sales worth $6.6M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | Sibold William John | President and CEO, Director | Sale10b5-1 | 11,583 | $538.65 | $6.2M | SEC |
| Aug 20, 2026 | Kelley Shannon T | General Counsel | Sale | 664 | $514.97 | $342K | SEC |
Who owns MDGL? Hedge funds and superinvestors
35 13F filers hold MDGL among their 50 largest positions, worth $6.6B combined, including John Paulson, Behzad Aghazadeh and Julian and Felix Baker. The biggest bets by portfolio weight are Rtw Investments, LP (9.1%), Behzad Aghazadeh (8.8%) and Jones Hill Capital LP (6.0%). In their latest 13Fs, 2 managers opened a new position and 8 added to one.
Superinvestors holding MDGL: John Paulson 27.9% · Behzad Aghazadeh 8.8% · Julian and Felix Baker 5.8%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Julian and Felix BakerHedge fund | 5.8% | $1.2B | 2,143,131 | +0.1% shares | Q2 2026 |
| Rtw Investments, LPHedge fund | 9.1% | $1.1B | 1,993,687 | +0.0% shares | Q2 2026 |
| Janus Henderson Group PLCInvestment manager | 0.5% | $1.1B | 2,018,647 | +27.4% shares | Q1 2026 |
| Jupiter Topco LLCInvestment manager | 0.4% | $1.0B | 1,936,099 | — | Q2 2026 |
| Behzad AghazadehHedge fund | 8.8% | $984.4M | 1,833,333 | +0.8% shares | Q2 2026 |
| John PaulsonInvestment manager | 27.9% | $719.5M | 1,340,020 | -3.7% shares | Q2 2026 |
| Armistice Capital, LLCHedge fund | 4.3% | $154.6M | 288,000 | +8.9% shares | Q2 2026 |
| Rock Springs Capital Management LPHedge fund | 4.6% | $94.0M | 174,999 | +2.3% shares | Q2 2026 |
| Erste Asset Management GmbHAsset manager | 0.5% | $58.1M | 110,210 | -31.2% shares | Q2 2026 |
| Tri Locum Partners LPHedge fund | 4.5% | $36.7M | 68,273 | -33.9% shares | Q2 2026 |
| Vestal Point Capital, LPHedge fund | 0.8% | $34.9M | 65,000 | — | Q2 2026 |
| Jones Hill Capital LPHedge fund | 6.0% | $28.2M | 52,545 | New | Q2 2026 |
| EULAV Asset ManagementMutual fund manager | 0.9% | $25.7M | 51,000 | -1.9% shares | Q3 2026 |
| Affinity Asset Advisors, LLCHedge fund | 1.1% | $21.5M | 40,000 | -27.3% shares | Q2 2026 |
| PFM Health Sciences, LPHedge fund | 1.4% | $15.7M | 29,313 | -14.2% shares | Q2 2026 |
| Integral Health Asset Management, LLCHedge fund | 0.6% | $13.4M | 25,000 | +0.0% shares | Q2 2026 |
| Tao Capital Management LPHedge fund | 0.6% | $11.3M | 21,000 | +0.0% shares | Q2 2026 |
| Bourgeon Capital Management LLCWealth manager | 1.5% | $10.1M | 20,095 | — | Q3 2026 |
| Sphera Funds Management Ltd.Hedge fund | 1.3% | $9.4M | 17,419 | +92.7% shares | Q2 2026 |
| Shikiar Asset Management IncWealth manager | 1.9% | $7.6M | 15,095 | +1.0% shares | Q3 2026 |
| Journey Strategic Wealth LLCWealth manager | 0.2% | $6.7M | 12,829 | +0.0% shares | Q1 2026 |
| Stanley-Laman Group, Ltd.Wealth manager | 0.7% | $6.5M | 12,984 | — | Q3 2026 |
| Alpine Global Management, LLCInvestment manager | 0.5% | $3.2M | 6,033 | — | Q2 2026 |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd.Hedge fund | 0.9% | $3.1M | 5,865 | +392.0% shares | Q2 2026 |
| Nan Fung Group Holdings LtdInvestment manager | 2.3% | $3.0M | 5,672 | +0.0% shares | Q2 2026 |
| Seven Fleet Capital Management LPHedge fund | 0.4% | $2.7M | 4,973 | +46.6% shares | Q2 2026 |
| Knott David M JrInvestment manager | 0.9% | $1.6M | 3,000 | +50.0% shares | Q2 2026 |
| Sivik Global Healthcare LLCHedge fund | 0.7% | $1.3M | 2,500 | New | Q3 2026 |
| Strid Group, LLCWealth manager | 0.1% | $1.3M | 2,500 | +0.0% shares | Q3 2026 |
| Palo Alto Investors LPHedge fund | 0.1% | $960K | 1,787 | +0.0% shares | Q2 2026 |
The 30 largest of 35 positions, by value. Each manager counts with its latest 13F (Q3 2026: 9, Q2 2026: 24, Q1 2026: 2). Screen MDGL in the grand portfolio →
MDGL stock trades by members of Congress
Members of Congress have disclosed 1 MDGL trade since 2023, 0 purchases and 1 sale in the past year; the latest was Daniel S. Goldman (D-NY), selling $1K–15K on Apr 10, 2023.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| May 19, 2023 | Daniel S. GoldmanD-NY · House | Sale | $1K–15K | Apr 10, 2023 | +77.6% |
MDGL questions and answers
Are insiders buying MDGL stock?
Between Aug 1, 2026 and Oct 29, 2026, 2 MDGL insiders filed 2 sales worth $6.6M on SEC Form 4, and no open-market purchases; 1 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own MDGL?
35 13F filers hold MDGL among their 50 largest positions, worth $6.6B combined, including John Paulson, Behzad Aghazadeh and Julian and Felix Baker. The biggest bets by portfolio weight are Rtw Investments, LP (9.1%), Behzad Aghazadeh (8.8%) and Jones Hill Capital LP (6.0%). In their latest 13Fs, 2 managers opened a new position and 8 added to one.
Has Congress traded MDGL?
Members of Congress have disclosed 1 MDGL trade since 2023, 0 purchases and 1 sale in the past year; the latest was Daniel S. Goldman (D-NY), selling $1K–15K on Apr 10, 2023.
Who is the largest holder of MDGL?
Among 13F filers, Julian and Felix Baker reports the largest MDGL position, $1.2B (2,143,131 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Rtw Investments, LP's: 9.1% of its portfolio.
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