ATLO US Equity

AMES NATIONAL CORP

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Financials · National Commercial Banks · CIK 1132651 · FYE 1231

$30.59

+0.36 (+1.19%)

USD · as of 2026-07-28 · marketstack

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Institutional ownership· 13F filers holding ATLO · 2026-Q1 methodology → sources →

88 holders

% of shares outstanding held

40.4%

Shares held (13F)

3,579,454

Reporting holders

Top holders

largest 88 of 88 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Fourthstone LLC	683,250683,250	$19M	7.71%	ADD 56%
2	BlackRock, Inc.	609,159609,159	$17M	6.88%	TRIM -3%
3	VANGUARD CAPITAL MANAGEMENT LLC	400,219400,219	$11M	4.52%	NEW†
4	DIMENSIONAL FUND ADVISORS LP	273,040273,040	$8M	3.08%	ADD 3%
5	GEODE CAPITAL MANAGEMENT, LLC	202,482202,482	$6M	2.29%	—
6	STATE STREET CORP	151,770151,770	$4M	1.71%	ADD 15%
7	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	100,392100,392	$3M	1.13%	—
8	Elizabeth Park Capital Advisors, Ltd.	80,48080,480	$2M	0.91%	TRIM -25%
9	NORTHERN TRUST CORP	69,77569,775	$2M	0.79%	ADD 6%
10	LPL Financial LLC	57,17757,177	$2M	0.65%	—
11	MARSHALL WACE, LLP	56,98656,986	$2M	0.64%	NEW
12	VANGUARD FIDUCIARY TRUST CO	55,86255,862	$2M	0.63%	NEW
13	VANGUARD PORTFOLIO MANAGEMENT LLC	51,46951,469	$1M	0.58%	NEW
14	MORGAN STANLEY	46,91646,916	$1M	0.53%	TRIM -12%
15	AMES NATIONAL CORP	46,55746,557	$1M	0.53%	TRIM -20%
16	AMERICAN CENTURY COMPANIES INC	45,19145,191	$1M	0.51%	ADD 380%
17	GOLDMAN SACHS GROUP INC	44,34244,342	$1M	0.50%	ADD 322%
18	SEGALL BRYANT & HAMILL, LLC	39,52139,521	$1M	0.45%	—
19	RENAISSANCE TECHNOLOGIES LLC	37,98437,984	$1M	0.43%	TRIM -16%
20	O'SHAUGHNESSY ASSET MANAGEMENT, LLC	33,67433,674	$950,280	0.38%	ADD 30%
21	AQR CAPITAL MANAGEMENT LLC	32,17232,172	$907,905	0.36%	ADD 7%
22	CHANNEL WEALTH LLC	31,28431,284	$882,834	0.35%	NEW
23	RITHOLTZ WEALTH MANAGEMENT	31,13631,136	$878,666	0.35%	ADD 57%
24	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	30,64030,640	$864,661	0.35%	—
25	RBF Capital, LLC	30,00030,000	$846,600	0.34%	TRIM -50%
26	FIRST TRUST ADVISORS LP	29,68329,683	$837,654	0.34%	ADD 63%
27	Bank of New York Mellon Corp	27,53227,532	$776,961	0.31%	TRIM -10%
28	Connor, Clark & Lunn Investment Management Ltd.	26,97726,977	$761,291	0.30%	ADD 29%
29	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	23,56823,568	$665,089	0.27%	TRIM -12%
30	Arkadios Wealth Advisors	22,06222,062	$622,590	0.25%	—
31	BRIDGEWAY CAPITAL MANAGEMENT, LLC	17,36117,361	$489,927	0.20%	ADD 4%
32	Nuveen, LLC	14,75114,751	$416,273	0.17%	—
33	Compound Planning, Inc.	13,30713,307	$375,524	0.15%	—
34	Trexquant Investment LP	11,92811,928	$336,608	0.13%	NEW
35	Empowered Funds, LLC	11,35311,353	$320,382	0.13%	NEW
36	Foster Group, Inc.	9,8539,853	$278,045	0.11%	—
37	OCCUDO QUANTITATIVE STRATEGIES LP	9,2679,267	$261,144	0.10%	NEW
38	BANK OF AMERICA CORP /DE/	8,5808,580	$242,127	0.10%	TRIM -20%
39	Larry Mathis Financial Planning, LLC	8,4438,443	$238,261	0.10%	NEW
40	XTX Topco Ltd	7,4647,464	$210,634	0.08%	NEW
41	RHUMBLINE ADVISERS	6,6116,611	$186,557	0.07%	TRIM -4%
42	DEUTSCHE BANK AG\	6,3486,348	$179,141	0.07%	—
43	Vanguard Global Advisers, LLC	5,8875,887	$166,131	0.07%	NEW
44	Clarity Asset Management, Inc.	5,1245,124	$144,586	0.06%	—
45	MetLife Investment Management, LLC	5,0245,024	$141,777	0.06%	TRIM -3%
46	NEW YORK STATE COMMON RETIREMENT FUND	4,4734,473	$126,228	0.05%	—
47	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	4,2304,230	$119,371	0.05%	ADD 2%
48	UBS Group AG	4,2164,216	$118,976	0.05%	ADD 28%
49	JPMORGAN CHASE & CO	3,6183,618	$100,616	0.04%	TRIM -62%
50	JONES FINANCIAL COMPANIES LLLP	3,6403,640	$100,500	0.04%	ADD 109%
51	WELLS FARGO & COMPANY/MN	3,3653,365	$94,949	0.04%	TRIM -66%
52	Smartleaf Asset Management LLC	3,3303,330	$92,607	0.04%	—
53	Russell Investments Group, Ltd.	2,5282,528	$71,346	0.03%	TRIM -4%
54	CWM, LLC	2,2482,248	$63,439	0.03%	ADD 4%
55	BNP PARIBAS FINANCIAL MARKETS	1,8681,868	$52,715	0.02%	TRIM -6%
56	Police & Firemen's Retirement System of New Jersey	1,7671,767	$49,865	0.02%	—
57	BARCLAYS PLC	1,5501,550	$43,740	0.02%	TRIM -89%
58	ACADIAN ASSET MANAGEMENT LLC	1,5081,508	$42,000	0.02%	TRIM -80%
59	FMR LLC	1,1771,177	$33,215	0.01%	—
60	PNC FINANCIAL SERVICES GROUP, INC.	914914	$25,793	0.01%	—
61	West Financial Advisors, LLC	804804	$22,689	0.01%	—
62	Legal & General Group Plc	795795	$22,435	0.01%	—
63	Ameritas Investment Partners, Inc.	711711	$20,064	0.01%	—
64	NewEdge Advisors, LLC	20,02820,028	$20,028	0.23%	TRIM -3%
65	Tower Research Capital LLC (TRC)	645645	$18,202	0.01%	ADD 24%
66	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	609609	$17,186	0.01%	ADD 128%
67	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	481481	$13,574	0.01%	TRIM -12%
68	CITIGROUP INC	413413	$11,655	0.00%	TRIM -65%
69	OSAIC HOLDINGS, INC.	404404	$11,400	0.00%	—
70	Sterling Capital Management LLC	294294	$8,297	0.00%	TRIM -43%
71	GAMMA Investing LLC	264264	$7,450	0.00%	ADD 9%
72	City State Bank	240240	$6,773	0.00%	TRIM -20%
73	Farther Finance Advisors, LLC	150150	$4,262	0.00%	—
74	Essential Partners LLC	129129	$3,640	0.00%	—
75	Optiver Holding B.V.	102102	$2,878	0.00%	TRIM -28%
76	EverSource Wealth Advisors, LLC	8989	$2,512	0.00%	ADD 5%
77	Allworth Financial LP	5353	$1,496	0.00%	ADD 23%
78	NISA INVESTMENT ADVISORS, LLC	4343	$1,213	0.00%	—
79	True Wealth Design, LLC	4141	$1,158	0.00%	—
80	MassMutual Private Wealth & Trust, FSB	4141	$1,157	0.00%	—
81	IFP Advisors, Inc	3232	$903	0.00%	—
82	ROTHSCHILD INVESTMENT LLC	1616	$452	0.00%	ADD 78%
83	Root Financial Partners, LLC	1010	$282	0.00%	NEW
84	Arax Advisory Partners	99	$254	0.00%	NEW
85	MAI Capital Management	88	$226	0.00%	ADD 167%
86	SJS Investment Consulting Inc.	33	$85	0.00%	—
87	Sunbelt Securities, Inc.	11	$28	0.00%	—
88	Covestor Ltd	66	$0	0.00%	ADD 500%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Fourthstone LLC

—

48K

100K

225K

439K

683K

$19M

BlackRock, Inc.

676K

654K

649K

623K

631K

609K

$17M

VANGUARD CAPITAL MANAGEMENT LLC

—

400K

$11M

DIMENSIONAL FUND ADVISORS LP

243K

249K

261K

258K

266K

273K

$8M

GEODE CAPITAL MANAGEMENT, LLC

205K

210K

215K

206K

202K

$6M

STATE STREET CORP

123K

124K

126K

125K

132K

152K

$4M

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

66K

92K

99K

100K

$3M

Elizabeth Park Capital Advisors, Ltd.

—

107K

80K

$2M

NORTHERN TRUST CORP

76K

74K

71K

72K

66K

70K

$2M

LPL Financial LLC

33K

42K

58K

57K

$2M

MARSHALL WACE, LLP

—

57K

$2M

VANGUARD FIDUCIARY TRUST CO

—

56K

$2M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

51K

$1M

MORGAN STANLEY

65K

54K

55K

53K

47K

$1M

AMES NATIONAL CORP

24K

42K

52K

89K

59K

47K

$1M

Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	88	3,579,454	40.4%	$100M
2025-Q4

Short interest has its own tab now — open SI →

Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.

Institutional ownership· 13F filers holding ATLO · 2026-Q1 methodology → sources →

88 holders

% of shares outstanding held

40.4%

Shares held (13F)

3,579,454

Reporting holders

Top holders

largest 88 of 88 · Δ vs 2025-Q4

#	Holder	Shares	Value	% of shares out	Δ QoQ
1	Fourthstone LLC	683,250683,250	$19M	7.71%	ADD 56%
2	BlackRock, Inc.	609,159609,159	$17M	6.88%	TRIM -3%
3	VANGUARD CAPITAL MANAGEMENT LLC	400,219400,219	$11M	4.52%	NEW†
4	DIMENSIONAL FUND ADVISORS LP	273,040273,040	$8M	3.08%	ADD 3%
5	GEODE CAPITAL MANAGEMENT, LLC	202,482202,482	$6M	2.29%	—
6	STATE STREET CORP	151,770151,770	$4M	1.71%	ADD 15%
7	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	100,392100,392	$3M	1.13%	—
8	Elizabeth Park Capital Advisors, Ltd.	80,48080,480	$2M	0.91%	TRIM -25%
9	NORTHERN TRUST CORP	69,77569,775	$2M	0.79%	ADD 6%
10	LPL Financial LLC	57,17757,177	$2M	0.65%	—
11	MARSHALL WACE, LLP	56,98656,986	$2M	0.64%	NEW
12	VANGUARD FIDUCIARY TRUST CO	55,86255,862	$2M	0.63%	NEW
13	VANGUARD PORTFOLIO MANAGEMENT LLC	51,46951,469	$1M	0.58%	NEW
14	MORGAN STANLEY	46,91646,916	$1M	0.53%	TRIM -12%
15	AMES NATIONAL CORP	46,55746,557	$1M	0.53%	TRIM -20%
16	AMERICAN CENTURY COMPANIES INC	45,19145,191	$1M	0.51%	ADD 380%
17	GOLDMAN SACHS GROUP INC	44,34244,342	$1M	0.50%	ADD 322%
18	SEGALL BRYANT & HAMILL, LLC	39,52139,521	$1M	0.45%	—
19	RENAISSANCE TECHNOLOGIES LLC	37,98437,984	$1M	0.43%	TRIM -16%
20	O'SHAUGHNESSY ASSET MANAGEMENT, LLC	33,67433,674	$950,280	0.38%	ADD 30%
21	AQR CAPITAL MANAGEMENT LLC	32,17232,172	$907,905	0.36%	ADD 7%
22	CHANNEL WEALTH LLC	31,28431,284	$882,834	0.35%	NEW
23	RITHOLTZ WEALTH MANAGEMENT	31,13631,136	$878,666	0.35%	ADD 57%
24	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	30,64030,640	$864,661	0.35%	—
25	RBF Capital, LLC	30,00030,000	$846,600	0.34%	TRIM -50%
26	FIRST TRUST ADVISORS LP	29,68329,683	$837,654	0.34%	ADD 63%
27	Bank of New York Mellon Corp	27,53227,532	$776,961	0.31%	TRIM -10%
28	Connor, Clark & Lunn Investment Management Ltd.	26,97726,977	$761,291	0.30%	ADD 29%
29	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	23,56823,568	$665,089	0.27%	TRIM -12%
30	Arkadios Wealth Advisors	22,06222,062	$622,590	0.25%	—
31	BRIDGEWAY CAPITAL MANAGEMENT, LLC	17,36117,361	$489,927	0.20%	ADD 4%
32	Nuveen, LLC	14,75114,751	$416,273	0.17%	—
33	Compound Planning, Inc.	13,30713,307	$375,524	0.15%	—
34	Trexquant Investment LP	11,92811,928	$336,608	0.13%	NEW
35	Empowered Funds, LLC	11,35311,353	$320,382	0.13%	NEW
36	Foster Group, Inc.	9,8539,853	$278,045	0.11%	—
37	OCCUDO QUANTITATIVE STRATEGIES LP	9,2679,267	$261,144	0.10%	NEW
38	BANK OF AMERICA CORP /DE/	8,5808,580	$242,127	0.10%	TRIM -20%
39	Larry Mathis Financial Planning, LLC	8,4438,443	$238,261	0.10%	NEW
40	XTX Topco Ltd	7,4647,464	$210,634	0.08%	NEW
41	RHUMBLINE ADVISERS	6,6116,611	$186,557	0.07%	TRIM -4%
42	DEUTSCHE BANK AG\	6,3486,348	$179,141	0.07%	—
43	Vanguard Global Advisers, LLC	5,8875,887	$166,131	0.07%	NEW
44	Clarity Asset Management, Inc.	5,1245,124	$144,586	0.06%	—
45	MetLife Investment Management, LLC	5,0245,024	$141,777	0.06%	TRIM -3%
46	NEW YORK STATE COMMON RETIREMENT FUND	4,4734,473	$126,228	0.05%	—
47	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	4,2304,230	$119,371	0.05%	ADD 2%
48	UBS Group AG	4,2164,216	$118,976	0.05%	ADD 28%
49	JPMORGAN CHASE & CO	3,6183,618	$100,616	0.04%	TRIM -62%
50	JONES FINANCIAL COMPANIES LLLP	3,6403,640	$100,500	0.04%	ADD 109%
51	WELLS FARGO & COMPANY/MN	3,3653,365	$94,949	0.04%	TRIM -66%
52	Smartleaf Asset Management LLC	3,3303,330	$92,607	0.04%	—
53	Russell Investments Group, Ltd.	2,5282,528	$71,346	0.03%	TRIM -4%
54	CWM, LLC	2,2482,248	$63,439	0.03%	ADD 4%
55	BNP PARIBAS FINANCIAL MARKETS	1,8681,868	$52,715	0.02%	TRIM -6%
56	Police & Firemen's Retirement System of New Jersey	1,7671,767	$49,865	0.02%	—
57	BARCLAYS PLC	1,5501,550	$43,740	0.02%	TRIM -89%
58	ACADIAN ASSET MANAGEMENT LLC	1,5081,508	$42,000	0.02%	TRIM -80%
59	FMR LLC	1,1771,177	$33,215	0.01%	—
60	PNC FINANCIAL SERVICES GROUP, INC.	914914	$25,793	0.01%	—
61	West Financial Advisors, LLC	804804	$22,689	0.01%	—
62	Legal & General Group Plc	795795	$22,435	0.01%	—
63	Ameritas Investment Partners, Inc.	711711	$20,064	0.01%	—
64	NewEdge Advisors, LLC	20,02820,028	$20,028	0.23%	TRIM -3%
65	Tower Research Capital LLC (TRC)	645645	$18,202	0.01%	ADD 24%
66	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	609609	$17,186	0.01%	ADD 128%
67	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	481481	$13,574	0.01%	TRIM -12%
68	CITIGROUP INC	413413	$11,655	0.00%	TRIM -65%
69	OSAIC HOLDINGS, INC.	404404	$11,400	0.00%	—
70	Sterling Capital Management LLC	294294	$8,297	0.00%	TRIM -43%
71	GAMMA Investing LLC	264264	$7,450	0.00%	ADD 9%
72	City State Bank	240240	$6,773	0.00%	TRIM -20%
73	Farther Finance Advisors, LLC	150150	$4,262	0.00%	—
74	Essential Partners LLC	129129	$3,640	0.00%	—
75	Optiver Holding B.V.	102102	$2,878	0.00%	TRIM -28%
76	EverSource Wealth Advisors, LLC	8989	$2,512	0.00%	ADD 5%
77	Allworth Financial LP	5353	$1,496	0.00%	ADD 23%
78	NISA INVESTMENT ADVISORS, LLC	4343	$1,213	0.00%	—
79	True Wealth Design, LLC	4141	$1,158	0.00%	—
80	MassMutual Private Wealth & Trust, FSB	4141	$1,157	0.00%	—
81	IFP Advisors, Inc	3232	$903	0.00%	—
82	ROTHSCHILD INVESTMENT LLC	1616	$452	0.00%	ADD 78%
83	Root Financial Partners, LLC	1010	$282	0.00%	NEW
84	Arax Advisory Partners	99	$254	0.00%	NEW
85	MAI Capital Management	88	$226	0.00%	ADD 167%
86	SJS Investment Consulting Inc.	33	$85	0.00%	—
87	Sunbelt Securities, Inc.	11	$28	0.00%	—
88	Covestor Ltd	66	$0	0.00%	ADD 500%

† a filer this large appearing as NEW usually reflects a renamed or succeeded filing entity (the old name stops filing the same quarter) — not a brand-new position.

Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.

Holder trends· top 15 holders · shares held over 6 quarters

green added · red trimmed

Holder

2024-Q4

2025-Q1

2025-Q2

2025-Q3

2025-Q4

2026-Q1

Latest value

Fourthstone LLC

—

48K

100K

225K

439K

683K

$19M

BlackRock, Inc.

676K

654K

649K

623K

631K

609K

$17M

VANGUARD CAPITAL MANAGEMENT LLC

—

400K

$11M

DIMENSIONAL FUND ADVISORS LP

243K

249K

261K

258K

266K

273K

$8M

GEODE CAPITAL MANAGEMENT, LLC

205K

210K

215K

206K

202K

$6M

STATE STREET CORP

123K

124K

126K

125K

132K

152K

$4M

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

66K

92K

99K

100K

$3M

Elizabeth Park Capital Advisors, Ltd.

—

107K

80K

$2M

NORTHERN TRUST CORP

76K

74K

71K

72K

66K

70K

$2M

LPL Financial LLC

33K

42K

58K

57K

$2M

MARSHALL WACE, LLP

—

57K

$2M

VANGUARD FIDUCIARY TRUST CO

—

56K

$2M

VANGUARD PORTFOLIO MANAGEMENT LLC

—

51K

$1M

MORGAN STANLEY

65K

54K

55K

53K

47K

$1M

AMES NATIONAL CORP

24K

42K

52K

89K

59K

47K

$1M

Institutional footprint by quarter

Line breaks are honest gaps — quarters with no 13F record, or a suppressed % — never interpolated. % of shares outstanding uses today's share count for every quarter (the only count stored).

Quarter	Holders	Shares held	% shares out	Value held
2026-Q1	88	3,579,454	40.4%	$100M
2025-Q4

Short interest has its own tab now — open SI →

ATLO US Equity☆

Institutional ownership· 13F filers holding ATLO · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

Institutional ownership· 13F filers holding ATLO · 2026-Q1 methodology → sources →

Top holders

Holder trends· top 15 holders · shares held over 6 quarters

Institutional footprint by quarter

ATLO US Equity