CIM · Chimera Investment Corp

$11.51 +0.03 (+0.26%) At close · Aug 27

Market Cap

$966.12M

83.71M

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.

Quarter:

Holders: 196

Total Value: $629,747,820

Total Shares: 47,233,974

Showing 1–100 of 201 holdings by value · page 1 of 3

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 196 13F filers · Δ vs Mar 31, 2026

Top Holder

16.6%

+1.6 pts

Top 5

48.5%

+2.5 pts

Top 10

66.8%

+3.6 pts

HHI

658

Broadly held+67

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -4

Institutional value: +5.5%

Shares held: -0.8%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+681,996	7,855,125
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	+333,844	472,143
Mega GEODE CAPITAL MANAGEMENT, LLC	+258,131	2,168,198
Large LSV ASSET MANAGEMENT	+241,467	1,519,685
Large Verition Fund Management LLC	+221,142	561,734

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega CITADEL ADVISORS LLC	−418,617	233,839
Mega SG Americas Securities, LLC	−382,605	19,628
Mega Qube Research & Technologies Ltd	−356,861	266,523
Mega CITIGROUP INC	−229,223	48,900
Mid ALGERT GLOBAL LLC	−213,279	132,544

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid Private Advisor Group, LLC	127,588	$1,702,023
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	94,900	$1,265,966
Mid Simplicity Wealth,LLC	70,482	$940,229
Mega HSBC HOLDINGS PLC	48,379	$645,375
Mid Edgestream Partners, L.P.	43,877	$585,319

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega FIRST TRUST ADVISORS LP	543,101	$6,815,917
Mid Centiva Capital, LP	258,200	$3,240,410
Large MARSHALL WACE, LLP	116,565	$1,462,890
Small VARCOV Co.	90,332	$1,133,666
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	79,695	$1,000,172

Filter: New 33 Increased 79 Reduced 48 Sold out 37 Unchanged 36

Showing 100 of 201

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$104,787,360

16.64%

7,855,125

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	127,625	$1,702,517	1.6%	Sole
BlackRock Investment Management (Australia) Ltd	283	$3,775	0.0%	Sole
BlackRock Asset Management Canada Ltd	617	$8,230	0.0%	Sole
BlackRock Investment Management, LLC	240,225	$3,204,601	3.1%	Sole
BLACKROCK ADVISORS LLC	189,613	$2,529,437	2.4%	Sole
BlackRock Fund Advisors	4,185,833	$55,839,012	53.3%	Sole
BlackRock Institutional Trust Company, N.A.	2,826,352	$37,703,535	36.0%	Sole
BlackRock Fund Managers Ltd.	18,467	$246,349	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	29,690	$396,064	0.4%	Sole
BlackRock (Netherlands) B.V.	30,765	$410,405	0.4%	Sole
BlackRock Asset Management Ireland Ltd	89,901	$1,199,279	1.1%	Sole
BlackRock Life Ltd	5,558	$74,143	0.1%	Sole
BlackRock Asset Management Schweiz AG	14,157	$188,854	0.2%	Sole
Aperio Group, LLC	95,987	$1,280,466	1.2%	Sole
SpiderRock Advisors, LLC	52	$693	0.0%	Sole

THORNBURG INVESTMENT MANAGEMENT INC

$73,529,052

11.68%

5,511,923

VANGUARD PORTFOLIO MANAGEMENT LLC

$48,948,915

7.77%

3,669,334

VANGUARD CAPITAL MANAGEMENT LLC

$47,623,039

7.56%

3,569,943

Allianz Asset Management GmbH

$30,341,923

4.82%

2,274,507

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Pacific Investment Management Company LLC	2,274,507	$30,341,923	100.0%	Defined

GEODE CAPITAL MANAGEMENT, LLC

$28,923,761

4.59%

2,168,198

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	313,462	$4,181,583	14.5%	Defined
Held directly	1,854,736	$24,742,178	85.5%	Defined

STATE STREET CORP

$27,070,528

4.30%

2,029,275

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	2,029,275	$27,070,528	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$20,572,894

3.27%

1,542,196

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	1,542,196	$20,572,894	100.0%	Defined

LSV ASSET MANAGEMENT

$20,272,597

3.22%

1,519,685

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$18,471,524

2.93%

1,384,672

WOLVERINE ASSET MANAGEMENT LLC

$14,842,577

2.36%

1,112,637

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	1,112,637	$14,842,577	100.0%	Defined

Leeward Investments, LLC - MA

$14,351,879

2.28%

1,075,853

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS CO	1,075,853	$14,351,879	100.0%	Sole

TWO SIGMA INVESTMENTS, LP

$13,808,700

2.19%

1,035,135

VAN ECK ASSOCIATES CORP

$10,657,419

1.69%

798,907

NORTHERN TRUST CORP

$10,317,580

1.64%

773,432

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	697,966	$9,310,865	90.2%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	62,614	$835,270	8.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	12,852	$171,445	1.7%	Other

MORGAN STANLEY

$7,816,049

1.24%

585,911

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO. LLC	23,982	$319,919	4.1%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	176,603	$2,355,884	30.1%	Defined
MORGAN STANLEY SMITH BARNEY LLC	167,728	$2,237,490	28.6%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	217,598	$2,902,756	37.1%	Defined

Verition Fund Management LLC

$7,493,531

1.19%

561,734

VANGUARD FIDUCIARY TRUST CO

$7,316,509

1.16%

548,464

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$6,298,387

1.00%

472,143

UBS Group AG

$5,881,471

0.93%

440,890

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	318,157	$4,244,214	72.2%	Defined
UBS AG	111,461	$1,486,889	25.3%	Defined
UBS Switzerland AG	11,272	$150,368	2.6%	Defined

Bank of New York Mellon Corp

$5,574,770

0.89%

417,899

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	263,305	$3,512,488	63.0%	Defined
The Bank of New York Mellon	153,467	$2,047,249	36.7%	Defined
BNY Mellon, NA joint	1,125	$15,007	0.3%	Defined
Held directly	2	$26	0.0%	Defined

RITHOLTZ WEALTH MANAGEMENT

$5,497,720

0.87%

412,123

MARINER INVESTMENT GROUP LLC

$5,054,512

0.80%

378,899

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$4,946,472

0.79%

370,800

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	370,800	$4,946,472	100.0%	Other

AQR CAPITAL MANAGEMENT LLC

$4,923,163

0.78%

369,053

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Petros Family Wealth, LLC	97	$1,293	0.0%	Other
RF&L WEALTH MANAGEMENT, LLC	16	$213	0.0%	Other
Prism Planning Partners LLC	538	$7,176	0.1%	Other
Compound Planning, Inc.	68	$907	0.0%	Other
Arax Advisory Partners	1,478	$19,716	0.4%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	1,698	$22,651	0.5%	Other
Stokes Family Office, LLC	60	$800	0.0%	Other
Held directly	365,098	$4,870,407	98.9%	Defined

Qube Research & Technologies Ltd

$3,555,416

0.56%

266,523

Nuveen, LLC

$3,121,546

0.50%

233,999

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	35,231	$469,981	15.1%	Defined
TEACHERS ADVISORS, LLC joint	198,768	$2,651,565	84.9%	Defined

Universal- Beteiligungs- und Servicegesellschaft mbH

$2,933,092

0.47%

219,872

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Universal-Investment-Gesellschaft mbH joint	219,872	$2,933,092	100.0%	Defined

PRUDENTIAL FINANCIAL INC

$2,852,759

0.45%

213,850

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	212,950	$2,840,753	99.6%	Defined
Prudential Trust Co	900	$12,006	0.4%	Defined

GOLDMAN SACHS GROUP INC

$2,325,402

0.37%

174,318

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	84,703	$1,129,938	48.6%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	89,615	$1,195,464	51.4%	Defined

Swiss National Bank

$2,174,780

0.35%

163,027

WELLS FARGO & COMPANY/MN

$2,149,952

0.34%

161,166

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	73,237	$976,981	45.4%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	9,614	$128,250	6.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	78,284	$1,044,308	48.6%	Defined
WELLS FARGO INVESTMENT INSTITUTE, INC.	31	$413	0.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$2,141,070

0.34%

160,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	160,500	$2,141,070	100.0%	Other

Russell Investments Group, Ltd.

$2,002,480

0.32%

150,111

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	48,411	$645,802	32.3%	Defined
Russell Investments Implementation Services, LLC	101,700	$1,356,678	67.7%	Defined

LPL Financial LLC

$1,959,445

0.31%

146,885

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$1,943,115

0.31%

145,661

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	716	$9,551	0.5%	Defined
UBS Asset Management Switzerland AG	114,777	$1,531,125	78.8%	Sole
UBS Asset Management (UK) Ltd.	18,165	$242,320	12.5%	Defined
Held directly	12,003	$160,119	8.2%	Defined

ALGERT GLOBAL LLC

$1,768,136

0.28%

132,544

SEGALL BRYANT & HAMILL, LLC

$1,710,814

0.27%

128,247

Private Advisor Group, LLC

$1,702,023

0.27%

127,588

BANK OF AMERICA CORP /DE/

$1,641,313

0.26%

123,037

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	63,883	$852,199	51.9%	Defined
BOFA SECURITIES, INC.	59,154	$789,114	48.1%	Defined

CITADEL ADVISORS LLC

$1,607,990

0.26%

120,539

RHUMBLINE ADVISERS

$1,532,032

0.24%

114,845

CAXTON ASSOCIATES LLP

$1,508,153

0.24%

113,055

Penserra Capital Management LLC

$1,462,971

0.23%

109,668

Invesco Ltd.

$1,405,927

0.22%

105,392

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	11,292	$150,634	10.7%	Defined
Invesco Trust Co joint	33,656	$448,971	31.9%	Defined
Invesco Capital Management LLC	60,444	$806,322	57.4%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$1,364,788

0.22%

102,308

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	102,308	$1,364,788	100.0%	Defined

ALLIANCEBERNSTEIN L.P.

$1,358,745

0.22%

101,855

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	101,855	$1,358,745	100.0%	Defined

FRANKLIN RESOURCES INC

$1,293,059

0.21%

96,931

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FRANKLIN ADVISERS INC	95,022	$1,267,593	98.0%	Defined
PUTNAM ADVISORY CO LLC	1,909	$25,466	2.0%	Defined

JANE STREET GROUP, LLC

$1,276,638

0.20%

95,700

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	95,700	$1,276,638	100.0%	Defined

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$1,265,966

0.20%

94,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	94,900	$1,265,966	100.0%	Defined

CITADEL ADVISORS LLC

$1,227,280

0.19%

92,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	92,000	$1,227,280	100.0%	Defined

DEUTSCHE BANK AG\

$1,211,698

0.19%

90,832

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	90,832	$1,211,698	100.0%	Defined

BARCLAYS PLC

$1,179,895

0.19%

88,448

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	85,828	$1,144,945	97.0%	Defined
BARCLAYS CAPITAL INC.	2,620	$34,950	3.0%	Defined

Legal & General Group Plc

$1,153,055

0.18%

86,436

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	8,200	$109,388	9.5%	Defined
Legal & General Investment Management Ltd joint	78,236	$1,043,667	90.5%	Defined

Quantinno Capital Management LP

$1,120,600

0.18%

84,003

Campbell & CO Investment Adviser LLC

$1,102,551

0.18%

82,650

JPMORGAN CHASE & CO

$1,065,290

0.17%

79,857

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	35,873	$478,545	44.9%	Defined
J.P. Morgan Investment Management Inc.	40,679	$542,657	50.9%	Defined
J.P. Morgan Securities LLC	3,140	$41,887	3.9%	Defined
J.P. Morgan Securities plc	165	$2,201	0.2%	Defined

OSAIC HOLDINGS, INC.

$974,366

0.15%

73,041

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	68,980	$920,193	94.4%	Defined
Osaic Advisory Services, LLC	4,061	$54,173	5.6%	Defined

Simplicity Wealth,LLC

$940,229

0.15%

70,482

Mariner, LLC

$824,371

0.13%

61,797

ROYAL BANK OF CANADA

$790,060

0.13%

59,225

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	2,563	$34,190	4.3%	Defined
RBC Capital Markets, LLC	13,030	$173,820	22.0%	Defined
RBC Dominion Securities Inc.	649	$8,657	1.1%	Defined
Held directly	42,983	$573,393	72.6%	Sole

VANGUARD ASSET MANAGEMENT, Ltd

$715,557

0.11%

53,640

Engineers Gate Manager LP

$691,465

0.11%

51,834

Simplify Asset Management Inc.

$680,673

0.11%

51,025

COMMONWEALTH EQUITY SERVICES, LLC

$664,572

0.11%

49,818

MetLife Investment Management, LLC

$656,368

0.10%

49,203

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	49,203	$656,368	100.0%	Defined

CITIGROUP INC

$652,325

0.10%

48,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	48,900	$652,325	100.0%	Defined

HSBC HOLDINGS PLC

$645,375

0.10%

48,379

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	48,379	$645,375	100.0%	Defined

Edgestream Partners, L.P.

$585,319

0.09%

43,877

Investment Partners Asset Management, Inc.

$556,904

0.09%

41,747

Gallagher Fiduciary Advisors, LLC

$532,919

0.08%

39,949

Atria Investments, Inc

$531,198

0.08%

39,820

MILLENNIUM MANAGEMENT LLC

$528,957

0.08%

39,652

IEQ CAPITAL, LLC

$527,383

0.08%

39,534

WEDBUSH SECURITIES INC

$519,966

0.08%

38,978

SEI INVESTMENTS CO

$499,369

0.08%

37,434

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	31,777	$423,905	84.9%	Sole
SEI TRUST CO	5,657	$75,464	15.1%	Sole

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$470,555

0.07%

35,274

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	35,274	$470,555	100.0%	Other

Jupiter Topco LLC

$451,705

0.07%

33,861

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS UK Ltd	33,861	$451,705	100.0%	Defined

STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM

$448,037

0.07%

33,586

Vanguard Global Advisers, LLC

$436,524

0.07%

32,723

KENNICOTT CAPITAL MANAGEMENT LLC

$435,857

0.07%

32,673

NEW YORK STATE COMMON RETIREMENT FUND

$421,183

0.07%

31,573

BNP PARIBAS ARBITRAGE, SA

$420,356

0.07%

31,511

Zurcher Kantonalbank (Zurich Cantonalbank)

$410,831

0.07%

30,797

VOYA INVESTMENT MANAGEMENT LLC

$401,507

0.06%

30,098

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	30,098	$401,507	100.0%	Defined

STATE OF WISCONSIN INVESTMENT BOARD

$399,412

0.06%

29,941

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$397,425

0.06%

29,792

Almitas Capital LLC

$389,221

0.06%

29,177

X ADVISORS, LLC CIMP

$386,404

0.06%

15,450

XTX Topco Ltd

$364,288

0.06%

27,308

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	27,308	$364,288	100.0%	Defined

Creative Planning

$345,385

0.05%

25,891

Graham Capital Management, L.P.

$344,798

0.05%

25,847

Cetera Investment Advisers

$339,929

0.05%

25,482

Police & Firemen's Retirement System of New Jersey

$337,955

0.05%

25,334

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	25,334	$337,955	100.0%	Defined

RENAISSANCE TECHNOLOGIES LLC

$328,871

0.05%

24,653

ARIZONA STATE RETIREMENT SYSTEM

$299,322

0.05%

22,438

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$286,543

0.05%

21,480

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	21,480	$286,543	100.0%	Defined

CITADEL ADVISORS LLC

$284,142

0.05%

21,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	21,300	$284,142	100.0%	Defined

INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC

$271,922

0.04%

20,384

SG Americas Securities, LLC

$261,837

0.04%

19,628

Key facts CIK 1409493 CUSIP 16934Q802 13F (30d) 154 filings 153 filers Visit website Investor relations