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IRDM IRIDIUM COMMUNICATIONS INC

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COM (common), issuer CIK 1418819

319 managers (324 13F filers) reported a position in IRDM shares at 2025-09-30, 101,484,955 shares in all. 59 filers opened a position and 68 filers sold out during the quarter.

Managers
319
13F filers
324
New
59
Added
118
Reduced
112
Sold out
68
Shares held by filers
101,484,955

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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.10,995,964$192M<0.01%+379,56813F-HRTimelineGroup
VANGUARD GROUP INCgroup of 2 filers holding9,479,969$166M-267,706Timeline
ARK Investment Management LLCin group ARK Investment Management LLC6,490,108$113M0.67%+1,156,58013F-HRTimelineGroup
Silver Heights Capital Management Inc5,189,703$90.6M40.63%+961,44013F-HRTimeline
Sumitomo Mitsui Trust Group, Inc.in group Sumitomo Mitsui Trust Group, …4,343,670$75.8M0.04%+27,90713F-HRTimelineGroup
Amova Asset Management Americas, Inc.in group Amova Asset Management Americ…4,313,080$75.3M0.73%+2,75613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP4,035,893$70.5M<0.01%-40,47813F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC3,039,731$53.1M0.04%+2,208,85713F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC2,878,902$50.3M0.03%+238,24413F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP2,327,395$40.6M0.01%-228,87813F-HRTimelineGroup
Synergy Asset Management, LLCin group Synergy Asset Management, LLC1,324,366$40M1.45%+662,18313F-HRTimelineGroup
Man Group plcin group Man Group plc2,012,077$35.1M0.07%+1,395,48513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,914,267$33.4M<0.01%+1,789,19613F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,838,230$32.1M<0.01%-643,50713F-HR/ATimelineGroup
UBS Group AGgroup of 2 filers holding1,775,161$31M+390,673Timeline
Pacer Advisors, Inc.1,744,095$30.5M0.08%+744,83613F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,703,977$29.8M<0.01%-215,23813F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,649,843$28.8M0.02%+437,00913F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,581,142$27.6M<0.01%+877,76013F-HR/ATimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp1,071,996$18.7M<0.01%-68,96213F-HRTimelineGroup
Select Equity Group, L.P.1,061,453$18.5M0.08%+60,10313F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,045,074$18.2M<0.01%+17,07113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP1,043,569$18.2M<0.01%-593,19613F-HRTimelineGroup
SCHRODER INVESTMENT MANAGEMENT GROUP992,553$17.2M0.01%-1,094,09513F-HRTimeline
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding965,290$16.9M+753,871Timeline
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …937,581$16.4M0.01%+560,01013F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.887,349$15.5M<0.01%+178,93713F-HRTimelineGroup
JUPITER ASSET MANAGEMENT LTDin group JUPITER ASSET MANAGEMENT LTD850,036$14.8M0.13%+495,03413F-HRTimelineGroup
Penserra Capital Management LLCin group Penserra Capital Management L…776,576$13.6M0.16%+360,01513F-HRTimelineGroup
VAN ECK ASSOCIATES CORPin group VAN ECK ASSOCIATES CORP762,671$13.3M0.01%+430,73613F-HRTimelineGroup
ANCHOR CAPITAL MANAGEMENT COMPANY, LLC735,366$12.8M11.05%-155,55113F-HRTimeline
BAMCO INC /NY/in group Baron Capital682,926$11.9M0.03%-7,694,98113F-HRTimelineGroup
M&G PLCin group M&G PLC680,857$11.6M0.06%new13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL660,934$11.5M0.07%new13F-HR/ATimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO612,610$10.7M<0.01%+50,23913F-HR/ATimelineGroup
PINNACLE ASSOCIATES LTD607,485$10.6M0.14%+24,62213F-HRTimeline
Trexquant Investment LP569,802$9.95M0.1%+532,13013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC537,862$9.39M<0.01%-337,81813F-HR/ATimelineGroup
BROWN ADVISORY INCin group BROWN ADVISORY INC512,910$8.96M0.01%+3313F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC504,534$8.81M0.01%+152,95013F-HRTimelineGroup
Qube Research & Technologies Ltd466,600$8.15M0.01%+456,44413F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC432,051$7.54M<0.01%-169,16313F-HRTimelineGroup
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP414,724$7.24M0.01%+131,14413F-HRTimelineGroup
IQ EQ FUND MANAGEMENT (IRELAND) Ltd385,311$6.73M0.46%+216,51713F-HRTimeline
FMR LLCin group FMR LLC382,399$6.68M<0.01%-511,87313F-HRTimelineGroup
VOLORIDGE INVESTMENT MANAGEMENT, LLC380,303$6.64M0.02%new13F-HRTimeline
Nuveen, LLCin group TIAA369,009$6.44M<0.01%-3,38113F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd345,226$6.03M0.14%+331,73813F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc323,729$5.65M<0.01%-21,76313F-HRTimelineGroup
DARK FOREST CAPITAL MANAGEMENT LP318,699$5.56M0.21%+254,42513F-HR/ATimeline
NORDEA INVESTMENT MANAGEMENT ABin group NORDEA INVESTMENT MANAGEMENT …317,938$5.51M<0.01%+3,16913F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC310,797$5.43M<0.01%+237,45613F-HRTimelineGroup
Gotham Asset Management, LLC307,518$5.37M0.02%-643,68113F-HRTimeline
Crossmark Global Holdings, Inc.299,572$5.23M0.08%+15,19813F-HRTimeline
Balyasny Asset Management L.P.in group Balyasny Asset Management293,366$5.12M0.01%new13F-HRTimelineGroup
Engineers Gate Manager LP292,318$5.1M0.06%+257,01613F-HRTimeline
Robertson Opportunity Capital, LLC287,346$5.02M1.72%+4,00013F-HRTimeline
Retirement Systems of Alabama279,697$4.88M0.02%-3,89913F-HRTimeline
RHUMBLINE ADVISERS267,069$4.66M<0.01%-18,69213F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC249,593$4.36M<0.01%+135,44513F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…239,364$4.18M0.01%+176,12013F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCgroup of 2 filers holding235,746$4.12M-9,508Timeline
BLAIR WILLIAM & CO/IL227,731$3.98M0.01%+28,12013F-HRTimeline
Carolina Wealth Advisors, LLC205,534$3.59M1.55%+203,01913F-HRTimeline
ALLIANCEBERNSTEIN L.P.198,117$3.46M<0.01%+53,62413F-HRTimeline
ArchPoint Investors195,707$3.42M0.94%+102,09813F-HRTimeline
Swiss National Bank188,700$3.29M<0.01%+1,80013F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…180,753$3.16M0.02%+15,30313F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC175,701$3.07M<0.01%-549,40313F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD172,365$3.01M0.01%+25413F-HRTimeline
Mitsubishi UFJ Asset Management Co., Lt…in group Mitsubishi UFJ Trust & Bankin…172,320$3.01M<0.01%+20,90113F-HRTimelineGroup
WORLDQUANT MILLENNIUM ADVISORS LLC170,747$2.98M0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS156,986$2.74M<0.01%+16,51513F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC152,705$2.67M0.01%+138,23113F-HRTimelineGroup
Amundiin group Amundi126,760$2.54M<0.01%new13F-HRTimelineGroup
TWINBEECH CAPITAL LP140,311$2.45M0.1%new13F-HRTimeline
CAPITAL FUND MANAGEMENT S.A.139,231$2.43M0.02%+41,39013F-HRTimeline
Holocene Advisors, LP136,778$2.39M0.01%+76,49913F-HRTimeline
AGF MANAGEMENT LTDin group AGF MANAGEMENT LTD132,467$2.31M0.01%+16,28513F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC128,055$2.21M<0.01%-78,46813F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…121,429$2.12M<0.01%+84,68313F-HRTimelineGroup
ExodusPoint Capital Management, LP118,093$2.06M0.03%+110,11713F-HRTimeline
Bridgewater Associates, LP116,726$2.04M0.01%new13F-HRTimeline
Weiss Asset Management LPin group Weiss Asset Management LP116,138$2.03M0.03%+78,08613F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
NEW YORK STATE TEACHERS RETIREMENT SYST…113,799$1.99M<0.01%-55513F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP112,873$1.97M<0.01%+73,05813F-HRTimelineGroup
Verition Fund Management LLC110,364$1.93M0.01%+18,59213F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd107,834$1.88M0.1%new13F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA106,841$1.86M<0.01%-18,34513F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/105,226$1.84M<0.01%-1,863,32313F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.75,204$1.81M<0.01%+59,07413F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…100,693$1.76M0.03%+69,80213F-HRTimelineGroup
Paralel Advisors LLC97,919$1.71M0.07%+12813F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC93,425$1.63M<0.01%-35,06413F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…91,971$1.61M<0.01%-5,86313F-HRTimeline
PDT Partners, LLC90,226$1.58M0.1%new13F-HRTimeline
SHERBROOKE PARK ADVISERS LLC89,340$1.56M0.73%+73,31713F-HRTimeline
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…88,114$1.54M0.01%+14,34013F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP87,962$1.54M0.13%+69,05313F-HRTimeline
STATE BOARD OF ADMINISTRATION OF FLORID…85,441$1.49M<0.01%-1,53513F-HRTimeline
CANADA LIFE ASSURANCE Coin group CANADA LIFE ASSURANCE Co82,707$1.43M<0.01%+2,27713F-HRTimelineGroup
Schonfeld Strategic Advisors LLC80,305$1.4M0.01%+49,73813F-HRTimeline
Skylands Capital, LLC79,500$1.39M0.19%+6,10013F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC75,468$1.32M0.01%+8,54713F-HRTimeline
Elo Mutual Pension Insurance Co75,043$1.31M0.02%+47,61213F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…74,923$1.31M0.04%+60,83213F-HRTimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …73,542$1.28M<0.01%-5,26613F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC72,619$1.27M0.07%new13F-HRTimelineGroup
Zurcher Kantonalbank (Zurich Cantonalba…68,393$1.19M<0.01%+35,00013F-HRTimeline
SIT INVESTMENT ASSOCIATES INCin group SIT INVESTMENT ASSOCIATES INC68,000$1.19M0.02%+48,10013F-HRTimelineGroup
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.67,300$1.18M<0.01%+61,10013F-HRTimelineGroup
WEDGE CAPITAL MANAGEMENT L L P/NC66,549$1.16M0.02%new13F-HRTimeline
SG Americas Securities, LLC66,390$1.16M<0.01%+45,71513F-HRTimeline
Advisors Asset Management, Inc.64,203$1.12M0.02%+21,20713F-HR/ATimeline
GILDER GAGNON HOWE & CO LLC63,772$1.11M0.01%new13F-HRTimeline
Oak Thistle LLC61,500$1.07M0.16%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP61,478$1.07M<0.01%+33,82713F-HRTimelineGroup
NFJ INVESTMENT GROUP, LLC58,592$1.02M0.04%013F-HRTimeline
New Century Financial Group, LLC56,663$989K1.76%new13F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/55,235$964K<0.01%+12,36813F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…54,671$955K<0.01%-3,68913F-HRTimelineGroup
MACQUARIE GROUP LTDin group MACQUARIE GROUP LTD53,813$940K<0.01%-16,94413F-HRTimelineGroup
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …52,830$922K<0.01%+40,20513F-HRTimelineGroup
LPL Financial LLC52,528$917K<0.01%-6,13713F-HRTimeline
Dynamic Technology Lab Private Ltd52,304$913K0.15%new13F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.51,862$906K<0.01%+15,84913F-HRTimelineGroup
ICON ADVISERS INC/CO51,567$900K0.2%new13F-HR/ATimeline
LECAP ASSET MANAGEMENT LTD51,157$893K0.31%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC49,561$865K<0.01%-46413F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND49,542$865K<0.01%-66013F-HRTimeline
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLCin group MUTUAL OF AMERICA CAPITAL MAN…49,007$856K0.01%-4,78313F-HRTimelineGroup
AMALGAMATED BANK48,193$841K0.01%-66713F-HRTimeline
COMERICA BANK46,595$814K<0.01%+16,70513F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO45,338$792K<0.01%-143,72613F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson44,739$781K<0.01%013F-HRTimelineGroup
Police & Firemen's Retirement System of…42,460$741K0.01%+6,46213F-HRTimeline
WealthTrust Axiom LLC41,965$733K0.2%-3,39413F-HRTimeline
Treasurer of the State of North Carolina41,842$731K<0.01%-2,46913F-HRTimeline
Graham Capital Management, L.P.41,369$722K0.03%+5,10013F-HRTimeline
TEACHERS RETIREMENT SYSTEM OF THE STATE…40,307$704K0.01%013F-HRTimeline
Entropy Technologies, LP40,276$703K0.05%+24,08313F-HRTimeline
Canal Insurance CO40,000$698K0.15%+20,00013F-HRTimeline
Thrivent Financial for Lutheransin group Thrivent Financial for Luther…36,479$637K<0.01%-77,40513F-HRTimelineGroup
Numerai GP LLC34,262$598K0.08%new13F-HRTimeline
Quantinno Capital Management LP34,011$594K<0.01%+18,81213F-HRTimeline
Gilliland Jeter Wealth Management LLC33,882$592K0.18%-2,67913F-HRTimeline
Marex Group Ltdin group Marex Group Ltd33,643$587K0.01%new13F-HRTimelineGroup
YOUSIF CAPITAL MANAGEMENT, LLC33,276$581K0.01%-2,92613F-HRTimeline
State of Tennessee, Department of Treas…32,943$575K<0.01%-4,00013F-HRTimeline
Bayesian Capital Management, LP31,800$555K0.11%new13F-HRTimeline
Campbell & CO Investment Adviser LLC31,703$554K0.04%new13F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC31,697$553K0.01%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…30,937$540K<0.01%-25813F-HRTimeline
CULLEN INVESTMENT GROUP, LTD.28,472$534K0.07%-2,12313F-HRTimeline
AXQ CAPITAL, LP29,911$522K0.2%new13F-HRTimeline
Louisiana State Employees Retirement Sy…29,500$515K0.01%-90013F-HRTimeline
Inspire Investing, LLCgroup of 2 filers holding29,107$508K-23,089Timeline
ARIZONA STATE RETIREMENT SYSTEM28,799$503K<0.01%+26113F-HRTimeline
MACKENZIE FINANCIAL CORP27,809$486K<0.01%+5,16213F-HRTimeline
DRW Securities, LLC26,808$480K0.02%new13F-HRTimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC27,091$471K<0.01%-56,51013F-HRTimelineGroup
HANCOCK WHITNEY CORP26,849$469K0.01%-3,84413F-HRTimeline
Creative Planningin group Creative Planning25,941$453K<0.01%-1,37913F-HRTimelineGroup
NEW MEXICO EDUCATIONAL RETIREMENT BOARD25,700$449K0.01%013F-HRTimeline
IMC-Chicago, LLC25,309$442K0.01%new13F-HRTimeline
STATE OF MICHIGAN RETIREMENT SYSTEM25,259$441K<0.01%-70013F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC24,323$425K<0.01%+8,01113F-HRTimeline
NORTHWESTERN MUTUAL INVESTMENT MANAGEME…group of 2 filers holding23,739$414K-891Timeline
Horizon Investments, LLC23,217$405K0.01%new13F-HRTimeline
Ensign Peak Advisors, Inc23,119$404K<0.01%-15,70013F-HR/ATimeline
Headlands Technologies LLC22,036$385K0.03%new13F-HRTimeline
Quantbot Technologies LP22,006$384K0.01%new13F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources21,534$376K<0.01%-1,80913F-HRTimelineGroup
Versor Investments LP21,400$374K0.07%-4,37813F-HRTimeline
AlphaQuest LLC21,354$373K0.02%+11,42213F-HRTimeline
OREGON PUBLIC EMPLOYEES RETIREMENT FUND21,336$373K<0.01%-80013F-HRTimeline
KLP KAPITALFORVALTNING AS21,000$367K<0.01%-10,20013F-HRTimeline
Ameritas Investment Partners, Inc.group of 2 filers holding20,200$353K-1,108Timeline
Atom Investors LP20,035$350K0.03%+12,72113F-HRTimeline
Cresset Asset Management, LLC19,704$344K<0.01%+19613F-HR/ATimeline
Scientech Research LLC19,549$341K0.12%+3,64013F-HRTimeline
AdvisorShares Investments LLC19,019$332K0.05%+3,55913F-HRTimeline
HighTower Advisors, LLC18,988$332K<0.01%-2,53113F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…18,358$321K<0.01%-2,49413F-HRTimelineGroup
MCDONALD PARTNERS LLC17,950$313K0.09%013F-HRTimeline
IFS Group,LLC16,728$295K0.26%13F-HRTimeline
TWO SIGMA SECURITIES, LLC16,794$293K0.04%-3213F-HRTimeline
CreativeOne Wealth, LLCin group CreativeOne Wealth, LLC16,450$287K0.01%-4913F-HRTimelineGroup
Tidal Investments LLCin group Tidal Investments LLC16,388$286K<0.01%-1,11213F-HRTimelineGroup
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA16,350$285K<0.01%+1,55113F-HRTimelineGroup
WEALTH EFFECTS LLC15,612$273K0.09%-6,49513F-HRTimeline
SIMPLEX TRADING, LLC15,516$270K0.01%new13F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/14,504$253K<0.01%-1,81813F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC14,455$252K0.02%new13F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…14,218$248K<0.01%013F-HRTimelineGroup
Bayforest Capital Ltd14,199$248K0.12%new13F-HRTimeline
EntryPoint Capital, LLC13,687$239K0.09%new13F-HRTimeline
Farringdon Capital, Ltd.13,580$237K0.06%-1,14013F-HRTimeline
Janney Montgomery Scott LLC12,882$225K<0.01%-16,15913F-HRTimeline
TEACHER RETIREMENT SYSTEM OF TEXAS12,813$224K<0.01%-9,72013F-HRTimeline