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Disclosery

MARA MARA HOLDINGS INC

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Stock (common), issuer CIK 1507605

401 managers (413 13F filers) reported a position in MARA shares at 2026-06-30, 280,092,348 shares in all. 83 filers opened a position and 58 filers sold out during the quarter.

Managers
401
13F filers
413
New
83
Added
150
Reduced
113
Sold out
58
Shares held by filers
280,092,348

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2026

Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.64,095,643$890M0.01%+4,320,34213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 7 filers holding47,097,842$654M+1,247,708Timeline
STATE STREET CORPin group STATE STREET CORP15,901,746$221M0.01%+681,57813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC10,872,917$188M0.01%+557,74813F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.10,376,069$144M0.09%+9,057,89013F-HRTimelineGroup
Marex Group Ltdin group Marex Group Ltd7,953,008$110M0.82%-361,88913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY6,766,861$94M<0.01%+1,547,46513F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding6,198,876$86.1M-2,109,633Timeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/6,100,582$84.7M0.01%+1,011,37113F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC4,977,949$69.1M0.01%-1,054,50413F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co4,727,923$65.7M0.01%+624,23913F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP4,513,153$62.7M0.01%+4,408,90213F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP3,702,048$51.4M0.01%+358,84713F-HRTimelineGroup
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP3,473,797$48.3M0.03%-7,67813F-HRTimelineGroup
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…3,354,830$46.6M0.07%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…3,336,026$46.3M0.04%+1,215,52113F-HRTimelineGroup
SEGALL BRYANT & HAMILL, LLC2,756,177$38.3M0.45%new13F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp2,684,354$37.3M0.01%+222,78313F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.2,653,400$36.9M0.12%+304,10013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP2,569,038$35.7M0.03%new13F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO2,491,920$35.2M<0.01%-2,179,08213F-HRTimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd2,392,374$33.2M0.28%+2,369,30713F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD2,318,200$32.2M0.02%new13F-HRTimeline
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC1,842,827$25.6M0.01%+4,67813F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding1,817,200$25.2M+27,072Timeline
Public Sector Pension Investment Board1,814,680$25.2M0.07%+461,66013F-HR/ATimeline
Vident Advisory, LLCin group Vident Advisory, LLC1,802,838$25M0.19%+257,95313F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN1,711,986$23.8M<0.01%+129,49713F-HRTimelineGroup
BARCLAYS PLCin group BARCLAYS PLC1,702,031$23.6M0.01%+420,18513F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC1,694,207$23.5M0.31%new13F-HRTimelineGroup
NOMURA ASSET MANAGEMENT CO LTDgroup of 3 filers holding1,683,852$23.4M+307,871Timeline
Bitwise Funds Trust1,625,386$22.6M5.3%13F-HRTimeline
EXCHANGE TRADED CONCEPTS, LLC1,525,531$21.2M0.1%-430,65813F-HR/ATimeline
TUDOR INVESTMENT CORP ET AL1,479,564$20.6M0.08%+1,352,83213F-HRTimeline
Invesco Ltd.in group Invesco Ltd.1,271,410$17.7M<0.01%-334,28413F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC1,232,023$17.1M0.01%+611,46113F-HRTimelineGroup
Alberta Investment Management Corp1,212,100$16.8M0.1%new13F-HRTimeline
Tidal Investments LLCin group Tidal Investments LLC1,151,942$16M0.04%+13,08713F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management1,134,250$15.8M0.03%+902,85013F-HRTimelineGroup
Nuveen, LLCin group TIAA1,116,089$15.5M<0.01%+161,11613F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC1,111,938$15.4M0.02%new13F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC1,059,698$14.7M<0.01%+238,42313F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP1,026,912$14.3M0.01%+52,67813F-HRTimelineGroup
RHUMBLINE ADVISERS1,024,401$14.2M0.01%-77,46313F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC972,576$13.5M<0.01%+540,26813F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\903,742$12.6M<0.01%+479,19213F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC902,386$12.5M0.01%+109,36013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc757,252$10.5M<0.01%-57,78813F-HRTimelineGroup
Swiss National Bank706,100$9.81M0.01%+12,20013F-HRTimeline
Jump Financial, LLCin group Jump Financial, LLC649,253$9.02M0.08%+633,38413F-HRTimelineGroup
OCCUDO QUANTITATIVE STRATEGIES LP634,376$8.81M0.47%new13F-HRTimeline
Man Group plcin group Man Group plc601,065$8.35M0.02%+246,44213F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC580,935$8.07M0.04%+25,37713F-HRTimelineGroup
HRT FINANCIAL LP568,834$7.9M0.01%-3,110,60513F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC526,688$7.32M0.01%+524,90013F-HRTimelineGroup
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…524,275$7.28M0.01%-60,84713F-HRTimelineGroup
Edgestream Partners, L.P.496,906$6.9M0.2%+145,97213F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC482,968$6.71M0.01%-24,47013F-HRTimelineGroup
Headlands Technologies LLC444,756$6.18M0.66%+150,66513F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/443,344$6.16M<0.01%+69,92813F-HRTimeline
COMPASS FINANCIAL MANAGEMENT LLC431,971$6M0.73%13F-HRTimeline
Allspring Global Investments Holdings, …in group Allspring Global Investments …428,831$5.73M0.01%new13F-HRTimelineGroup
LPL Financial LLC410,702$5.7M<0.01%-583,75913F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…405,306$5.63M0.01%-6,74613F-HR/ATimeline
Foundations Investment Advisors, LLC398,085$5.53M0.06%-5,64713F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC395,705$5.5M0.01%+9,36513F-HRTimelineGroup
NEW YORK STATE TEACHERS RETIREMENT SYST…373,456$5.19M0.01%-18,58513F-HRTimeline
SG Americas Securities, LLC363,842$5.05M<0.01%-250,11513F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC342,166$4.75M<0.01%+85,61213F-HRTimelineGroup
BANCO BILBAO VIZCAYA ARGENTARIA, S.A.345,233$4.75M0.03%-319,60213F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd314,736$4.37M0.06%+128,89213F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.513,891$4.19M<0.01%+57,66313F-HRTimeline
IMC-Chicago, LLC286,832$3.98M0.04%-821,93413F-HRTimeline
ALGERT GLOBAL LLC271,198$3.77M0.04%+4,81813F-HRTimeline
Aptus Capital Advisors, LLC258,504$3.59M0.03%-6,63213F-HRTimeline
Second Line Capital, LLC258,225$3.59M0.67%-5,57713F-HRTimeline
WINTON GROUP Ltdin group WINTON GROUP Ltd255,240$3.55M0.11%new13F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS255,042$3.54M<0.01%+129,04213F-HRTimelineGroup
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…250,368$3.48M0.01%-2,05213F-HRTimelineGroup
Generali Asset Management SPA SGR250,000$3.47M0.06%013F-HRTimeline
Quantinno Capital Management LP249,207$3.46M<0.01%+82,63613F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV248,736$3.45M<0.01%+227,05213F-HR/ATimeline
Creative Planningin group Creative Planning243,097$3.38M<0.01%+62,47313F-HRTimelineGroup
Defiance ETFs, LLC235,224$3.14M0.04%+116,18913F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…225,551$3.13M0.01%+19,92913F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…216,801$3.01M<0.01%+174,33313F-HRTimelineGroup
Stratos Wealth Partners, LTD.in group Stratos Wealth Partners, LTD.216,603$3.01M0.03%+198,53313F-HRTimelineGroup
GREAT LAKES ADVISORS, LLC207,265$2.88M0.02%new13F-HRTimeline
Y-Intercept (Hong Kong) Ltd195,754$2.72M0.05%new13F-HRTimeline
Cetera Investment Advisers193,617$2.69M<0.01%+7,92513F-HRTimeline
Schonfeld Strategic Advisors LLC189,508$2.63M0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …187,917$2.61M<0.01%+17,16813F-HRTimelineGroup
COMMONWEALTH EQUITY SERVICES, LLC182,582$2.54M<0.01%+40,97213F-HRTimeline
MIZUHO MARKETS AMERICAS LLCin group MIZUHO FINANCIAL GROUP INC178,363$2.48M0.04%-168,83513F-HRTimelineGroup
Generali Investments CEE, investicni sp…177,234$2.46M0.12%013F-HRTimeline
Louisiana State Employees Retirement Sy…167,100$2.32M0.03%-60013F-HR/ATimeline
Quantbot Technologies LP164,041$2.28M0.09%-211,34513F-HRTimeline
Harvest Portfolios Group Inc.158,599$2.2M0.03%-42,83113F-HRTimeline
Jupiter Topco LLCin group Janus Henderson150,209$2.09M<0.01%13F-HRTimelineGroup
MACKENZIE FINANCIAL CORP146,020$2.03M<0.01%new13F-HRTimeline
Kera Capital Partners, Inc.137,947$1.92M0.18%new13F-HRTimeline
State of Tennessee, Department of Treas…136,706$1.9M0.01%+53,04913F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND136,319$1.89M<0.01%+24,90013F-HRTimeline
MOODY NATIONAL BANK TRUST DIVISIONin group MOODY NATIONAL BANK TRUST DIV…133,775$1.86M0.15%new13F-HRTimelineGroup
Caption Management, LLC130,000$1.81M0.06%-265,98113F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC128,683$1.79M0.03%new13F-HRTimeline
State of Alaska, Department of Revenue125,559$1.74M0.02%-61,12413F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP119,376$1.66M<0.01%+19,02213F-HRTimelineGroup
Police & Firemen's Retirement System of…114,404$1.59M0.01%+11,87413F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC112,360$1.56M0.05%new13F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC111,995$1.56M0.01%-223,16213F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…110,709$1.54M0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD109,543$1.52M<0.01%+3,65113F-HRTimeline
Corient Private Wealth LPin group Corient Private Wealth LP108,198$1.5M<0.01%+16,08713F-HR/ATimelineGroup
Sara-Bay Financial107,730$1.5M0.4%+45,00013F-HRTimeline
FIFTH THIRD BANK, NATIONAL ASSOCIATIONgroup of 2 filers holding107,132$1.49M+13,014Timeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA106,390$1.48M<0.01%+11,41213F-HRTimelineGroup
GROUP ONE TRADING LLC106,294$1.48M0.04%-35,59213F-HRTimeline
AMALGAMATED BANK102,596$1.43M0.01%-6,08513F-HRTimeline
YOUSIF CAPITAL MANAGEMENT, LLC102,129$1.42M0.02%+1,25413F-HRTimeline
Natixis Investment Managersgroup of 2 filers holding101,347$1.41M-17,558Timeline
Zurcher Kantonalbank (Zurich Cantonalba…99,025$1.38M<0.01%+18,91813F-HRTimeline
ARIZONA STATE RETIREMENT SYSTEM97,107$1.35M0.01%+44013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…92,352$1.28M0.01%013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO91,418$1.27M<0.01%+37,27113F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…90,412$1.26M0.01%-3,11113F-HRTimeline
Cresset Asset Management, LLC90,084$1.25M<0.01%-13,54013F-HRTimeline
Cambridge Investment Research Advisors,…88,823$1.23M<0.01%-6,74013F-HR/ATimeline
SBI Securities Co., Ltd.88,183$1.22M0.03%-21,89013F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND85,928$1.19M0.01%-55913F-HRTimeline
CIBC Bancorp USA Inc.in group CIBC Bancorp USA Inc.84,915$1.18M<0.01%-31,15213F-HRTimelineGroup
Engineers Gate Manager LP84,759$1.18M0.02%new13F-HRTimeline
GMT Capital Corp83,800$1.16M0.06%+55,10013F-HRTimeline
Paradiem, LLC80,085$1.11M0.24%+46,22813F-HRTimeline
KLP KAPITALFORVALTNING AS77,900$1.08M<0.01%013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …77,122$1.07M<0.01%+30,60813F-HRTimelineGroup
Jain Global LLC73,000$1.01M0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC71,096$988K<0.01%+9,52513F-HRTimeline
HighTower Advisors, LLC70,996$986K<0.01%-7,52413F-HRTimeline
Mariner, LLCin group Mariner, LLC70,708$982K<0.01%+56,95713F-HRTimelineGroup
STATE BOARD OF ADMINISTRATION OF FLORID…70,054$973K<0.01%013F-HRTimeline
Lighthouse Investment Partners, LLCin group Lighthouse Investment Partner…70,000$972K0.03%new13F-HRTimelineGroup
FMR LLCin group FMR LLC69,002$958K<0.01%+12,73413F-HRTimelineGroup
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…66,254$920K<0.01%+4,03713F-HRTimelineGroup
VICTORY CAPITAL MANAGEMENT INC60,299$838K<0.01%-15,38013F-HRTimeline
Leonteq Securities AG58,945$819K0.05%-53,27913F-HRTimeline
ALLSTATE CORPin group ALLSTATE CORP58,916$818K0.01%+54513F-HRTimelineGroup
M&T Bank Corpin group M&T Bank Corp58,744$816K<0.01%+2,23813F-HRTimelineGroup
Amundiin group Amundi56,679$787K<0.01%+3,25413F-HRTimelineGroup
ProShare Advisors LLC56,018$778K<0.01%-4,17513F-HRTimeline
Maryland State Retirement & Pension Sys…55,454$770K0.01%-4813F-HRTimeline
Vontobel Holding Ltd.in group Vontobel Holding Ltd.54,654$759K<0.01%-172,19213F-HRTimelineGroup
X ADVISORS, LLC56,989$738K1.96%13F-HRTimeline
Polymer Capital Management (US) LLC50,637$703K0.1%new13F-HRTimeline
Hennion & Walsh Asset Management, Inc.50,275$698K0.02%+9,87313F-HRTimeline
Sava Infond d.o.o.50,000$694K0.05%+10,00013F-HRTimeline
Centiva Capital, LP49,849$692K0.02%-29,28913F-HRTimeline
Wealthfront Advisers LLC49,365$686K<0.01%-29,32113F-HRTimeline
J. Safra Sarasin Holding AGin group J. Safra Sarasin Holding AG49,196$684K0.01%new13F-HRTimelineGroup
Cerity Partners LLCin group Cerity Partners LLC48,657$676K<0.01%+26,41913F-HRTimelineGroup
Brookstone Capital Managementin group Brookstone Capital Management48,000$667K0.01%-3,94513F-HRTimelineGroup
Handelsbanken Fonder AB46,900$651K<0.01%-66,30013F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.45,000$625K0.01%-147,33313F-HRTimelineGroup
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…43,669$607K0.01%+39013F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/43,367$602K<0.01%+11,99013F-HRTimelineGroup
Banco Santander, S.A.in group Banco Santander, S.A.43,362$602K<0.01%new13F-HRTimelineGroup
CAPITAL FUND MANAGEMENT S.A.42,807$595K<0.01%new13F-HRTimeline
CAPITAL ADVISORS INC/OK42,542$591K0.01%-85813F-HRTimeline
denkapparat Operations GmbH41,302$574K0.19%013F-HRTimeline
GREAT VALLEY ADVISOR GROUP, INC.40,606$564K0.01%-2,80013F-HRTimeline
Federation des caisses Desjardins du Qu…40,005$556K<0.01%-55313F-HRTimeline
XPONANCE LLC38,272$532K<0.01%+2,83013F-HRTimeline
Chokshi & Queen Wealth Advisors, Inc36,400$506K0.23%+25,47013F-HRTimeline
Fulcrum Asset Management LLP36,028$505K0.05%new13F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…39,275$495K<0.01%+8,31113F-HRTimeline
Kestra Advisory Services, LLCin group Kestra Advisory Services, LLC35,491$493K<0.01%-10,17113F-HRTimelineGroup
Private Advisor Group, LLC35,310$490K<0.01%-16313F-HRTimeline
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…35,203$489K0.01%+4,13413F-HRTimelineGroup
STRS OHIO34,400$478K<0.01%+24,20013F-HRTimeline
AM INVESTMENT STRATEGIES LLC34,354$477K0.09%013F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC34,324$477K<0.01%+7,49113F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC33,269$462K<0.01%-931,35113F-HRTimelineGroup
Lido Advisors, LLCin group Lido Advisors, LLC32,262$448K<0.01%+25813F-HRTimelineGroup
PROFUND ADVISORS LLC31,201$433K0.01%+82813F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding30,757$427K-351,844Timeline
AE Wealth Management LLC30,142$419K<0.01%+8,27013F-HRTimeline
Fieldview Capital Management, LLC29,382$408K0.12%new13F-HRTimeline
Milestone Asset Management Group, LLC29,276$407K0.2%+8613F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…28,554$397K<0.01%+8,88913F-HRTimelineGroup
NFSG Corp28,514$396K0.05%-36,63013F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT ASSOCIATION…28,093$390K<0.01%013F-HRTimeline
HUB Investment Partners, LLC27,976$389K0.01%-9,21413F-HRTimeline
Western Wealth Management, LLC26,489$368K0.01%-65113F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources26,487$368K<0.01%+9,70113F-HRTimelineGroup
Pinnacle Wealth Planning Services, Inc.26,367$366K0.03%+17,79013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC25,867$359K<0.01%-17,68913F-HRTimeline
R Squared Ltd25,515$354K0.19%new13F-HRTimeline
GAMMA Investing LLC25,506$354K0.01%+4,24613F-HRTimeline
Phraction Management LLC25,000$347K0.08%013F-HRTimeline
Meeder Advisory Services, Inc.in group Meeder Advisory Services, Inc.24,831$345K0.01%+8,52813F-HRTimelineGroup