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Equibles

ONT

Onterris, Inc.

Company with tickers: MEG

CIK
1643615
CUSIP
615111101
Shares Outstanding
36,139,227
13F Activity (30d)
6 filings 2 filers

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 171
Total Value: $740,739,037
Total Shares: 33,839,158
Showing 1–100 of 174 holdings by value · page 1 of 2

Institutional Ownership Trend

23 quarters

Superinvestors Holding ONT

All superinvestors →
Joel Greenblatt $492,919

Holder Concentration

Across 171 13F filers · Δ vs Dec 31, 2025
Top Holder
9.3%
Jun 2023 → Mar 2026 · range 7.7% – 9.7%
−0.4 pts
Top 5
30.5%
Jun 2023 → Mar 2026 · range 28.6% – 35.1%
−1.8 pts
Top 10
47.5%
Jun 2023 → Mar 2026 · range 44.7% – 54.3%
−1.3 pts
HHI
330
Jun 2023 → Mar 2026 · range 293 – 393
Broadly held−16

Quarterly Activity

vs Dec 31, 2025
New
23
Increased
61
Decreased
60
Sold Out
40
Unchanged
27
Holder count: -17
Institutional value: -10.5%
Shares held: +1.5%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega MILLENNIUM MANAGEMENT LLC +239,580 311,166
Mega ALLIANCEBERNSTEIN L.P. +237,485 1,130,913
Mega GOLDMAN SACHS GROUP INC +227,607 1,960,610
Mid ROYCE & ASSOCIATES LP +167,241 954,776
Mega DIMENSIONAL FUND ADVISORS LP +160,767 858,856

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Large FRED ALGER MANAGEMENT, LLC −680,561 387,994
Mega Nuveen, LLC −244,588 272,364
Mid ArrowMark Colorado Holdings LLC −129,485 139,928
Large Trexquant Investment LP −123,349 51,192
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. −121,738 1,531,641

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,436,165 $31,437,651
Mega Amundi 880,032 $19,263,899
Mega VANGUARD FIDUCIARY TRUST CO 212,109 $4,643,066
Large MACKENZIE FINANCIAL CORP 134,451 $2,943,132
Mid Raiffeisen Bank International AG 86,668 $1,897,162

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 1,986,620 $49,327,772
Large SILVERCREST ASSET MANAGEMENT GROUP LLC 354,434 $8,800,596
Large MARSHALL WACE, LLP 109,058 $2,707,910
Mega RHUMBLINE ADVISERS 49,843 $1,237,601
Small HUSSMAN STRATEGIC ADVISORS, INC. 42,000 $1,042,860
Filter: New 23 Increased 61 Reduced 60 Sold out 40 Unchanged 27
Showing 100 of 174
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $68,970,129 9.31% 3,150,760
Large BAMCO INC /NY/ $47,461,525 6.41% 2,168,183
Mega GOLDMAN SACHS GROUP INC $42,917,751 5.79% 1,960,610
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $33,527,621 4.53% 1,531,641
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $33,178,031 4.48% 1,515,671
Mega VANGUARD CAPITAL MANAGEMENT LLC $31,437,651 4.24% 1,436,165
Mega PRINCIPAL FINANCIAL GROUP INC $29,469,565 3.98% 1,346,257
Mega ALLIANCEBERNSTEIN L.P. $24,755,685 3.34% 1,130,913
Mid ROYCE & ASSOCIATES LP $20,900,046 2.82% 954,776
Mega Amundi $19,263,899 2.60% 880,032
Mega JANUS HENDERSON GROUP PLC $18,979,548 2.56% 867,042
Mega DIMENSIONAL FUND ADVISORS LP $18,800,356 2.54% 858,856
Mega GEODE CAPITAL MANAGEMENT, LLC $17,593,692 2.38% 803,732
Large TRUIST FINANCIAL CORP $17,409,401 2.35% 795,313
Mega Legal & General Group Plc $16,498,141 2.23% 753,684
Mega STATE STREET CORP $15,945,770 2.15% 728,450
Mid Stephens Investment Management Group LLC $15,213,112 2.05% 694,980
Mid ALGERT GLOBAL LLC $13,112,657 1.77% 599,025
Mega FMR LLC $12,441,683 1.68% 568,373
Small Summit Creek Advisors LLC $11,189,292 1.51% 511,160
Mega MORGAN STANLEY $11,137,826 1.50% 508,809
Large DekaBank Deutsche Girozentrale Bank $11,069,707 1.49% 505,697
Mid Avalon Trust Co Bank $9,554,853 1.29% 436,494
Large Allspring Global Investments Holdings, LLC $8,622,646 1.16% 393,908
Large FRED ALGER MANAGEMENT, LLC $8,493,188 1.15% 387,994
Mega BANK OF AMERICA CORP /DE/ Bank $8,157,023 1.10% 372,637
Mega Fisher Asset Management, LLC $7,717,735 1.04% 352,569
Mega NORTHERN TRUST CORP Bank $7,471,011 1.01% 341,298
Mega MILLENNIUM MANAGEMENT LLC $6,811,423 0.92% 311,166
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $5,976,911 0.81% 273,043
Mega Nuveen, LLC $5,962,047 0.80% 272,364
Mid PEREGRINE CAPITAL MANAGEMENT LLC $5,883,616 0.79% 268,781
Large BLAIR WILLIAM & CO/IL $5,844,192 0.79% 266,980
Mid Granahan Investment Management, LLC $5,292,717 0.71% 241,787
Mega CITADEL ADVISORS LLC $4,872,429 0.66% 222,587
Mega UBS Group AG $4,854,719 0.66% 221,778
Mega VANGUARD FIDUCIARY TRUST CO Bank $4,643,066 0.63% 212,109
Large Russell Investments Group, Ltd. $4,410,044 0.60% 201,464
Mega Invesco Ltd. $3,973,033 0.54% 181,500
Large TUDOR INVESTMENT CORP ET AL $3,692,208 0.50% 168,671
Mega CITIGROUP INC $3,424,711 0.46% 156,451
Mid OP Asset Management Ltd $3,418,276 0.46% 156,157
Large SEI INVESTMENTS CO $3,377,801 0.46% 154,308
Mega BNP PARIBAS ARBITRAGE, SA $3,291,664 0.44% 150,373
Mega JANE STREET GROUP, LLC $3,182,827 0.43% 145,401
Mid Global Alpha Capital Management Ltd. $3,130,182 0.42% 142,996
Mid CenterBook Partners LP $3,075,720 0.42% 140,508
Mid ArrowMark Colorado Holdings LLC $3,063,023 0.41% 139,928
Large MACKENZIE FINANCIAL CORP $2,943,132 0.40% 134,451
Large PANAGORA ASSET MANAGEMENT INC $2,937,134 0.40% 134,177
Large Rockefeller Capital Management L.P. $2,806,035 0.38% 128,188
Large Universal- Beteiligungs- und Servicegesellschaft mbH $2,602,983 0.35% 118,912
Small ESSEX INVESTMENT MANAGEMENT CO LLC $2,440,143 0.33% 111,473
Mega AQR CAPITAL MANAGEMENT LLC $2,431,407 0.33% 111,074
Large Connor, Clark & Lunn Investment Management Ltd. $2,352,759 0.32% 107,481
Large Caption Management, LLC $2,189,000 0.30% 100,000
Mega Bank of New York Mellon Corp Bank $2,176,913 0.29% 99,448
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $1,978,856 0.27% 90,400
Mid Raiffeisen Bank International AG Bank $1,897,162 0.26% 86,668
Mid Conestoga Capital Advisors, LLC $1,828,143 0.25% 83,515
Mega NORDEA INVESTMENT MANAGEMENT AB $1,721,472 0.23% 78,642
Large Qube Research & Technologies Ltd $1,521,442 0.21% 69,504
Mega Swiss National Bank Bank $1,446,929 0.20% 66,100
Mid GSA CAPITAL PARTNERS LLP $1,301,469 0.18% 59,455
Mega WELLS FARGO & COMPANY/MN $1,224,393 0.17% 55,934
Large HRT FINANCIAL LP $1,194,427 0.16% 54,565
Large Creative Planning $1,189,130 0.16% 54,323
Large ExodusPoint Capital Management, LP $1,171,815 0.16% 53,532
Small Cladis Investment Advisory, LLC $1,157,981 0.16% 52,900
Large Trexquant Investment LP $1,120,592 0.15% 51,192
Mid IQ EQ FUND MANAGEMENT (IRELAND) Ltd $1,084,496 0.15% 49,543
Large CONGRESS ASSET MANAGEMENT CO $1,083,905 0.15% 49,516
Micro Holcombe Financial, Inc. $1,043,080 0.14% 47,651
Mega CITADEL ADVISORS LLC $1,011,318 0.14% 46,200
Large Mariner, LLC $855,920 0.12% 39,101
Mid HARBOR CAPITAL ADVISORS, INC. $837,073 0.11% 38,240
Mid XTX Topco Ltd $804,720 0.11% 36,762
Large Squarepoint Ops LLC $798,656 0.11% 36,485
Large Man Group plc $761,793 0.10% 34,801
Mid Legato Capital Management LLC $758,882 0.10% 34,668
Mega DEUTSCHE BANK AG\ Bank $714,292 0.10% 32,631
Mega FRANKLIN RESOURCES INC $682,814 0.09% 31,193
Mega PRICE T ROWE ASSOCIATES INC /MD/ $672,614 0.09% 30,727
Large Caption Management, LLC $656,700 0.09% 30,000
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $652,672 0.09% 29,816
Small MANAGED ASSET PORTFOLIOS, LLC $650,198 0.09% 29,703
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $635,182 0.09% 29,017
Small VIRTUS ADVISERS, LLC $624,258 0.08% 28,518
Mega ROYAL BANK OF CANADA Bank $622,157 0.08% 28,422
Mid Pinnacle Financial Partners, Inc. $598,319 0.08% 27,333
Mid Engineers Gate Manager LP $585,141 0.08% 26,731
Large STIFEL FINANCIAL CORP $530,416 0.07% 24,231
Large Gotham Asset Management, LLC $492,919 0.07% 22,518
Large SG Americas Securities, LLC Broker-Dealer $491,890 0.07% 22,471
Small Horrell Capital Management, Inc. $488,956 0.07% 22,337
Mega ENVESTNET ASSET MANAGEMENT INC $480,835 0.06% 21,966
Small Numerai GP LLC $474,049 0.06% 21,656
Large IEQ CAPITAL, LLC $446,665 0.06% 20,405
Mega VANGUARD ASSET MANAGEMENT, Ltd $435,063 0.06% 19,875
Large MetLife Investment Management, LLC $415,362 0.06% 18,975

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