MSGK · Insider trading · 13F holders · Congress trades
Madison Square Grdn Sprt Corp Cl A (MSGK)
Who is buying and selling MSGK: 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
- 44
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
MSGK at a glance
- No open-market insider purchases or sales of MSGK were filed in the last 90 days.
- 44 13F filers hold MSGK among their 50 largest positions, worth $2.4B combined, including John Rogers, Robert Pohly, Mario Gabelli and Robert Pitts. The biggest bets by portfolio weight are Silver Lake Group, L.L.C. (16.7%), Avantyr Capital Partners, LP (6.9%) and Islander Capital Partners, L.P. (6.4%). In their latest 13Fs, 4 managers opened a new position and 4 added to one.
- No member of Congress has disclosed a trade in MSGK.
MSGK insider trading
No open-market insider purchases or sales of MSGK were filed in the last 90 days.
Who owns MSGK? Hedge funds and superinvestors
44 13F filers hold MSGK among their 50 largest positions, worth $2.4B combined, including John Rogers, Robert Pohly, Mario Gabelli and Robert Pitts. The biggest bets by portfolio weight are Silver Lake Group, L.L.C. (16.7%), Avantyr Capital Partners, LP (6.9%) and Islander Capital Partners, L.P. (6.4%). In their latest 13Fs, 4 managers opened a new position and 4 added to one.
Superinvestors holding MSGK: John Rogers 2.6% · Robert Pohly 2.3% · Mario Gabelli 2.1% · Robert Pitts 0.9% · Bill Gates 0.7% · Mason Hawkins 0.1% · Lindsell Train 0.0%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Silver Lake Group, L.L.C.Investment manager | 16.7% | $763.5M | 1,899,962 | +0.0% shares | Q2 2026 |
| John RogersSuperinvestor · Institutional asset manager | 2.6% | $264.6M | 658,551 | -8.2% shares | Q2 2026 |
| Bill GatesSuperinvestor · Endowment & foundation | 0.7% | $238.1M | 592,406 | +0.0% shares | Q2 2026 |
| Mario GabelliCorporation | 2.1% | $236.7M | 589,128 | +0.3% shares | Q2 2026 |
| Avantyr Capital Partners, LPHedge fund | 6.9% | $187.7M | 467,014 | New | Q2 2026 |
| Gabelli Funds LLCMutual fund manager | 1.0% | $157.2M | 391,228 | +0.1% shares | Q2 2026 |
| Robert PohlyHedge fund | 2.3% | $137.9M | 343,183 | +57.5% shares | Q2 2026 |
| Reinhart Partners, LLC.Institutional asset manager | 1.9% | $78.0M | 192,388 | -13.8% shares | Q3 2026 |
| Systematic Financial Management LPInstitutional asset manager | 1.2% | $61.1M | 152,155 | -1.5% shares | Q2 2026 |
| Southpoint Capital Advisors LPHedge fund | 1.3% | $56.3M | 140,000 | -9.7% shares | Q2 2026 |
| CastleKnight Management LPHedge fund | 1.0% | $28.4M | 70,639 | -21.4% shares | Q2 2026 |
| Robert PittsHedge fund | 0.9% | $27.8M | 69,150 | — | Q2 2026 |
| Shapiro Capital Management LLCInstitutional asset manager | 1.3% | $22.2M | 55,165 | -23.5% shares | Q2 2026 |
| Greenhouse Funds LLLPHedge fund | 1.0% | $18.8M | 46,902 | -69.6% shares | Q2 2026 |
| Islander Capital Partners, L.P.Hedge fund | 6.4% | $17.7M | 44,122 | New | Q2 2026 |
| Monimus Capital Management, LPHedge fund | 4.2% | $16.5M | 41,012 | -1.8% shares | Q2 2026 |
| Tabor Asset Management, LPInstitutional asset manager | 4.9% | $15.9M | 39,458 | -14.5% shares | Q2 2026 |
| Concentric Capital Strategies, LPAsset manager | 0.8% | $12.6M | 31,238 | -36.9% shares | Q2 2026 |
| MYDA Advisors LLCHedge fund | 2.7% | $11.3M | 28,000 | +75.0% shares | Q2 2026 |
| New Age Alpha Advisors, LLCMutual fund manager | 0.4% | $10.3M | 25,754 | — | Q2 2026 |
| Freshford Capital Management, LLCHedge fund | 3.5% | $10.3M | 25,618 | New | Q2 2026 |
| Horizon Kinetics Asset Management LLCAsset manager | 0.1% | $9.3M | 23,221 | — | Q2 2026 |
| Boyar Asset Management Inc.Wealth manager | 5.1% | $8.9M | 22,236 | -11.4% shares | Q2 2026 |
| Steinberg Asset Management LLCWealth manager | 4.4% | $6.8M | 16,857 | -0.1% shares | Q3 2026 |
| Intrepid Capital Management IncMutual fund manager | 2.4% | $5.7M | 14,152 | -0.2% shares | Q2 2026 |
| Lafayette Investments, Inc.Wealth manager | 1.0% | $5.4M | 13,344 | -0.1% shares | Q2 2026 |
| Bridger Management, LLCHedge fund | 3.5% | $5.3M | 13,072 | +0.0% shares | Q2 2026 |
| Pullen Investment Management, LLCWealth manager | 2.5% | $5.2M | 12,763 | -0.7% shares | Q3 2026 |
| Sandler Capital ManagementHedge fund | 2.7% | $4.5M | 11,297 | -30.8% shares | Q2 2026 |
| Insight Inv LLCWealth manager | 1.8% | $3.7M | 9,228 | -2.4% shares | Q3 2026 |
The 30 largest of 44 positions, by value. Each manager counts with its latest 13F (Q3 2026: 5, Q2 2026: 38, Q1 2026: 1). Screen MSGK in the grand portfolio →
MSGK stock trades by members of Congress
No member of Congress has disclosed a trade in MSGK.
MSGK questions and answers
Are insiders buying MSGK stock?
No open-market insider purchases or sales of MSGK were filed in the last 90 days.
Which hedge funds own MSGK?
44 13F filers hold MSGK among their 50 largest positions, worth $2.4B combined, including John Rogers, Robert Pohly, Mario Gabelli and Robert Pitts. The biggest bets by portfolio weight are Silver Lake Group, L.L.C. (16.7%), Avantyr Capital Partners, LP (6.9%) and Islander Capital Partners, L.P. (6.4%). In their latest 13Fs, 4 managers opened a new position and 4 added to one.
Has Congress traded MSGK?
No member of Congress has disclosed a trade in MSGK.
Who is the largest holder of MSGK?
Among 13F filers, Silver Lake Group, L.L.C. reports the largest MSGK position, $763.5M (1,899,962 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Silver Lake Group, L.L.C.'s: 16.7% of its portfolio.
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