Vault-13

MADISON AIR SOLUTIONS CORP MAIR

COM SHS CL A · Common Stock · CUSIP 55658T105

156 institutional holders
122,343,743122.3m shares reported held*
$4.8bnreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $39.00. Options: 4 managers hold calls ($2.9m notional), 1 hold puts ($405.6k).

Trends to Q2 2026

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$1m$2m$3mQ3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $0Q1 26 puts: $0Q1 26P/C —Q2 26 calls: $2.9mQ2 26 puts: $405.6kQ2 26P/C 0.14
Numbers
QuarterCallsPutsP/C
Q3 2025$0$0—
Q4 2025$0$0—
Q1 2026$0$0—
Q2 2026$2.9m$405.6k0.14

Biggest buyers

FMR LLC New +14,084,999+14.1m
Durable Capital Partners LP New +10,196,486+10.2m
Invesco Ltd. New +7,804,925+7.8m
BlackRock, Inc. New +7,501,231+7.5m
HRTG GPE, LLC New +7,407,407+7.4m
CITADEL ADVISORS LLC New +6,448,221+6.4m
MORGAN STANLEY New +5,793,130+5.8m
Pictet Asset Management Holding SA New +4,434,713+4.4m
Zimmer Partners, LP New +4,150,810+4.2m
Forest Avenue Capital Management LP New +4,061,688+4.1m

Biggest sellers

None

Biggest calls

UBS Group AG New $1.8m46.4k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP New $612.3k15.7k shares
JANE STREET GROUP, LLC New $405.6k10.4k shares
GROUP ONE TRADING LLC New $23.4k600 shares

Biggest puts

SUSQUEHANNA INTERNATIONAL GROUP, LLP New $405.6k10.4k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Gies Larry 13G · exempt (held before listing) new · filed 2026-08-10 67.1% new 336.7m≈ $13.1bn 2026-08-10
BERTARELLI ERNESTO 13G · exempt (held before listing) new · filed 2026-05-15 25.3% new 44.8m≈ $1.7bn 2026-05-15
FMR LLC 13G · institution new · filed 2026-08-06 8.0% new 14.1m≈ $549.3m 2026-08-06
Durable Capital Partners LP 13G · institution new · filed 2026-04-23 5.2% new 9.3m≈ $361.1m 2026-04-23

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
101Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 1 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20260—0——
Q2 20260—0——
Q3 20261$556.8k0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-08-25 BERTARELLI ERNESTO +1 10% owner · By K.C. Armada, LP Bought 8,770,524 $24.97 $219.0m8.8m shares +23%
2026-08-25 La Force Andrew Hudson III Director Bought 20,000 $27.84 $556.8k20.0k shares +120%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FMR LLC 0.02% of their portfolio BOSTON, MA 14,084,99914.1m $549.3m $549.3m 0.02% New
2 Durable Capital Partners LP 3.87% of their portfolio Bethesda, MD 10,196,48610.2m $397.7m $397.7m 3.87% New
3 Invesco Ltd. 0.02% of their portfolio ATLANTA, GA 7,804,9257.8m $304.4m $304.4m 0.02% New
4 BlackRock, Inc. 0.00% of their portfolio New York, NY 7,501,2317.5m $292.5m $292.5m 0.00% New
5 HRTG GPE, LLC 11.64% of their portfolio WILSON, WY 7,407,4077.4m $288.9m $288.9m 11.64% New
6 CITADEL ADVISORS LLC 0.14% of their portfolio MIAMI, FL 6,448,2216.4m $251.5m $251.5m 0.14% New
7 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 5,793,1305.8m $225.9m $225.9m 0.01% New
8 Pictet Asset Management Holding SA 0.17% of their portfolio CAROUGE, V8 4,434,7134.4m $173.0m $173.0m 0.17% New
9 Zimmer Partners, LP 3.83% of their portfolio NEW YORK, NY 4,150,8104.2m $161.9m $161.9m 3.83% New
10 Forest Avenue Capital Management LP 6.65% of their portfolio MIAMI, FL 4,061,6884.1m $158.4m $158.4m 6.65% New
11 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 3,712,6183.7m $144.8m $144.8m 0.00% New
12 LORD, ABBETT & CO. LLC 0.36% of their portfolio JERSEY CITY, NJ 3,191,3893.2m $124.5m $124.5m 0.36% New
13 VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio MALVERN, PA 3,065,4023.1m $119.6m $119.6m 0.01% New
14 PRICE T ROWE ASSOCIATES INC /MD/ 0.01% of their portfolio BALTIMORE, MD 2,990,2843.0m $116.6m $116.6m 0.01% New
15 XN LP 2.70% of their portfolio New York, NY 2,630,4032.6m $102.6m $102.6m 2.70% New
16 T. Rowe Price Investment Management, Inc. 0.06% of their portfolio BALTIMORE, MD 2,446,2032.4m $95.4m $95.4m 0.06% New
17 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.14% of their portfolio TORONTO, A6 2,443,1312.4m $95.3m $95.3m 0.14% New
18 Merewether Investment Management, LP 1.43% of their portfolio DALLAS, TX 1,943,7281.9m $75.8m $75.8m 1.43% New
19 Alyeska Investment Group, L.P. 0.17% of their portfolio CHICAGO, IL 1,728,4971.7m $67.4m $67.4m 0.17% New
20 ExodusPoint Capital Management, LP 0.48% of their portfolio NEW YORK, NY 1,328,9881.3m $51.8m $51.8m 0.48% New
21 D1 Capital Partners L.P. 0.14% of their portfolio New York, NY 1,250,0001.2m $48.8m $48.8m 0.14% New
22 BAMCO INC /NY/ 0.07% of their portfolio NEW YORK, NY 1,169,5401.2m $45.6m $45.6m 0.07% New
23 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 1,160,0941.2m $45.2m $45.2m 0.00% New
24 Schonfeld Strategic Advisors LLC 0.21% of their portfolio NEW YORK, NY 1,003,5441.0m $39.1m $39.1m 0.21% New
25 NORGES BANK 0.00% of their portfolio OSLO, Q8 1,000,0001.0m $39.0m $39.0m 0.00% Not comparable
26 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 953,925953.9k $37.2m $37.2m 0.00% New
27 Ghisallo Capital Management LLC 0.61% of their portfolio BOSTON, MA 800,000800.0k $31.2m $31.2m 0.61% New
28 Balyasny Asset Management L.P. 0.06% of their portfolio Chicago, IL 790,973791.0k $30.8m $30.8m 0.06% New
29 Burkehill Global Management, LP 1.02% of their portfolio NEW YORK, NY 725,000725.0k $28.3m $28.3m 1.02% New
30 SEVEN GRAND MANAGERS, LLC 1.10% of their portfolio BRONXVILLE, NY 700,000700.0k $27.3m $27.3m 1.10% New
31 Driehaus Capital Management LLC 0.15% of their portfolio Chicago, IL 679,403679.4k $26.5m $26.5m 0.15% New
32 SOROS FUND MANAGEMENT LLC 0.32% of their portfolio NEW YORK, NY 625,004625.0k $24.4m $24.4m 0.32% New
33 Robeco Schweiz AG 0.38% of their portfolio ZURICH, V8 611,307611.3k $23.8m $23.8m 0.38% New
34 BlueCrest Capital Management Ltd 1.02% of their portfolio ST HELIER, Y9 610,000610.0k $23.8m $23.8m 1.02% New
35 DEUTSCHE BANK AG\ 0.01% of their portfolio FRANKFURT AM MAIN, 2M 603,117603.1k $23.5m $23.5m 0.01% New
36 UBS Group AG 0.00% of their portfolio ZURICH, V8 599,163599.2k $23.4m $23.4m 0.00% New
37 MILLENNIUM MANAGEMENT LLC 0.02% of their portfolio NEW YORK, NY 580,455580.5k $22.6m $22.6m 0.02% New
38 JANE STREET GROUP, LLC 0.01% of their portfolio NEW YORK, NY 553,075553.1k $21.6m $21.6m 0.01% New
39 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 544,992545.0k $21.3m $21.3m 0.00% New
40 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 528,965529.0k $20.6m $20.6m 0.00% New
41 FRANKLIN RESOURCES INC 0.00% of their portfolio San Mateo, CA 458,849458.8k $17.9m $17.9m 0.00% New
42 Longaeva Partners L.P. 0.51% of their portfolio Chicago, IL 454,392454.4k $17.7m $17.7m 0.51% New
43 Jain Global LLC 0.20% of their portfolio NEW YORK, NY 430,587430.6k $16.8m $16.8m 0.20% New
44 READYSTATE ASSET MANAGEMENT LP 0.65% of their portfolio CHICAGO, IL 411,000411.0k $16.0m $16.0m 0.65% New
45 Hudson Bay Capital Management LP 0.07% of their portfolio STAMFORD, CT 401,740401.7k $15.7m $15.7m 0.07% New
46 Daiwa Securities Group Inc. 0.04% of their portfolio CHIYODA-KU,TOKYO, M0 400,717400.7k $15.6m $15.6m 0.04% New
47 Blackstone Inc. 0.05% of their portfolio NEW YORK, NY 400,000400.0k $15.6m $15.6m 0.05% Not comparable
48 Capital World Investors 0.00% of their portfolio LOS ANGELES, CA 393,922393.9k $15.4m $15.4m 0.00% New
49 JENNISON ASSOCIATES LLC 0.01% of their portfolio NEW YORK, NY 379,121379.1k $14.8m $14.8m 0.01% New
50 TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio NEW YORK, NY 318,481318.5k $12.4m $12.4m 0.01% New
51 LMR Partners LLP 0.09% of their portfolio LONDON, X0 307,354307.4k $12.0m $12.0m 0.09% New
52 TimesSquare Capital Management, LLC 0.18% of their portfolio NEW YORK, NY 305,681305.7k $11.9m $11.9m 0.18% New
53 Freestone Grove Partners LP 0.07% of their portfolio San Francisco, CA 271,151271.2k $10.6m $10.6m 0.07% New
54 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 261,600261.6k $10.2m $10.2m 0.01% New
55 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 242,855242.9k $9.5m $9.5m 0.00% New
56 Hood River Capital Management LLC 0.07% of their portfolio PALM BEACH GARDENS, FL 236,849236.8k $9.2m $9.2m 0.07% New
57 Walleye Capital LLC 0.04% of their portfolio NEW YORK, NY 230,989231.0k $9.0m $9.0m 0.04% New
58 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 227,749227.7k $8.9m $8.9m 0.00% New
59 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 200,735200.7k $7.8m $7.8m 0.00% New
60 BW Gestao de Investimentos Ltda. 0.19% of their portfolio SAO PAULO, D5 200,000200.0k $7.8m $7.8m 0.19% New
61 Davidson Kempner Capital Management LP 0.13% of their portfolio New York, NY 200,000200.0k $7.8m $7.8m 0.13% Not comparable
62 TUDOR INVESTMENT CORP ET AL 0.03% of their portfolio STAMFORD, CT 185,056185.1k $7.2m $7.2m 0.03% New
63 ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio Berwyn, PA 182,929182.9k $7.1m $7.1m 0.00% New
64 TD Asset Management Inc 0.01% of their portfolio Toronto, A6 175,982176.0k $6.9m $6.9m 0.01% New
65 Weiss Asset Management LP 0.07% of their portfolio BOSTON, MA 170,000170.0k $6.6m $6.6m 0.07% Not comparable
66 Amundi 0.00% of their portfolio Paris, I0 164,253164.3k $6.4m $6.4m 0.00% New
67 Point72 Asset Management, L.P. 0.01% of their portfolio STAMFORD, CT 149,881149.9k $5.8m $5.8m 0.01% New
68 XTX Topco Ltd 0.06% of their portfolio LONDON, X0 113,776113.8k $4.4m $4.4m 0.06% New
69 TEACHER RETIREMENT SYSTEM OF TEXAS 0.01% of their portfolio AUSTIN, TX 100,000100.0k $3.9m $3.9m 0.01% New
70 Woodline Partners LP 0.01% of their portfolio San Francisco, CA 100,000100.0k $3.9m $3.9m 0.01% New
71 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 98,91698.9k $3.8m $3.8m 0.00% New
72 Madison Asset Management, LLC 0.04% of their portfolio MADISON, WI 82,42782.4k $3.2m $3.2m 0.04% New
73 PINNBROOK CAPITAL MANAGEMENT LP 0.52% of their portfolio NEW YORK, NY 80,60080.6k $3.1m $3.1m 0.52% New
74 Squarepoint Ops LLC 0.01% of their portfolio NEW YORK, NY 79,95080.0k $3.1m $3.1m 0.01% New
75 Centiva Capital, LP 0.10% of their portfolio New York, NY 75,00075.0k $2.9m $2.9m 0.10% New
76 Shay Capital LLC 0.24% of their portfolio NEW YORK, NY 55,00055.0k $2.1m $2.1m 0.24% New
77 STIFEL FINANCIAL CORP 0.00% of their portfolio ST. LOUIS, MO 53,09553.1k $2.1m $2.1m 0.00% New
78 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 52,00352.0k $2.0m $2.0m 0.00% New
79 Wolf Hill Capital Management, LP 0.19% of their portfolio GREENWICH, CT 50,00050.0k $1.9m $1.9m 0.19% New
80 Renaissance Capital LLC 0.98% of their portfolio Stamford, CT 45,47245.5k $1.8m $1.8m 0.98% New
81 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 42,52942.5k $1.7m $1.7m 0.00% New
82 Aventail Capital Group, LP 0.09% of their portfolio NEW YORK, NY 38,85538.9k $1.5m $1.5m 0.09% New
83 Engineers Gate Manager LP 0.02% of their portfolio NEW YORK, NY 38,54038.5k $1.5m $1.5m 0.02% New
84 Holocene Advisors, LP 0.00% of their portfolio New York, NY 37,56737.6k $1.5m $1.5m 0.00% New
85 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 35,01635.0k $1.4m $1.4m 0.00% New
86 Lisanti Capital Growth, LLC 0.30% of their portfolio NEW YORK, NY 35,01535.0k $1.4m $1.4m 0.30% New
87 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 33,87033.9k $1.3m $1.3m 0.00% New
88 FRED ALGER MANAGEMENT, LLC 0.00% of their portfolio NEW YORK, NY 33,73633.7k $1.3m $1.3m 0.00% New
89 Covalis Capital LLP 0.07% of their portfolio LONDON, X0 30,00030.0k $1.2m $1.2m 0.07% New
90 Cetera Investment Advisers 0.00% of their portfolio SCHAUMBURG, IL 25,79225.8k $1.0m $1.0m 0.00% New
91 AGF MANAGEMENT LTD 0.00% of their portfolio TORONTO, A6 25,00025.0k $975.0k $975.0k 0.00% New
92 Vestmark Advisory Solutions, Inc. 0.01% of their portfolio Wakefield, MA 24,79824.8k $967.1k $967.1k 0.01% New
93 COHEN & STEERS, INC. 0.00% of their portfolio NEW YORK, NY 20,00020.0k $780.0k $780.0k 0.00% New
94 PARK AVENUE SECURITIES LLC 0.00% of their portfolio NEW YORK, NY 19,97120.0k $779.0k $779.0k 0.00% New
95 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 19,73719.7k $741.9k $741.9k 0.00% New
96 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 19,59919.6k $764.4k $764.4k 0.00% New
97 NATIXIS ADVISORS, LLC 0.00% of their portfolio Boston, MA 19,45119.5k $758.0k $758.0k 0.00% New
98 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 17,74917.7k $692.2k $692.2k 0.00% New
99 RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio ST. PETERSBURG, FL 17,43517.4k $680.0k $680.0k 0.00% New
100 BLAIR WILLIAM & CO/IL 0.00% of their portfolio CHICAGO, IL 16,36516.4k $638.2k $638.2k 0.00% New