Skip to main content
Equibles

ATLO

Ames National Corp

Company with tickers: ATLO

CIK
1132651
CUSIP
031001100
Shares Outstanding
8,857,220
13F Activity (30d)
72 filings 67 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: 90
Total Value: $101,638,609
Total Shares: 3,601,654

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 90 13F filers · Δ vs Dec 31, 2025
Top Holder
19.0%
Jun 2023 → Mar 2026 · range 19.0% – 26.9%
−0.2 pts
Top 5
60.2%
Jun 2023 → Mar 2026 · range 60.2% – 69.3%
−2.2 pts
Top 10
73.0%
Jun 2023 → Mar 2026 · range 73.0% – 81.9%
−3.6 pts
HHI
920
Jun 2023 → Mar 2026 · range 920 – 1,361
Broadly held −36

Quarterly Activity

vs Dec 31, 2025
New
13
Increased
30
Decreased
27
Sold Out
7
Unchanged
20
Holder count: +6
Institutional value: +34.8%
Shares held: +9.7%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Small Fourthstone LLC +244,554 683,250
Mega AMERICAN CENTURY COMPANIES INC +35,776 45,191
Mega GOLDMAN SACHS GROUP INC +33,844 44,342
Mega STATE STREET CORP +19,647 151,770
Mega FIRST TRUST ADVISORS LP +11,445 29,683

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Small Elizabeth Park Capital Advisors, Ltd. −26,905 80,480
Mega JANE STREET GROUP, LLC −26,700 7,600
Mega BlackRock, Inc. −21,414 609,159
Mega BARCLAYS PLC −12,256 1,550
Micro AMES NATIONAL CORP −12,000 46,557

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 400,219 $11,294,180
Large MARSHALL WACE, LLP 56,986 $1,608,144
Mega VANGUARD FIDUCIARY TRUST CO 55,862 $1,576,425
Mega VANGUARD PORTFOLIO MANAGEMENT LLC 51,469 $1,452,455
Small CHANNEL WEALTH LLC 31,284 $882,834

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 510,111 $11,712,147
Micro IFG Advisory, LLC 18,813 $431,946
Large STRS OHIO 15,600 $358,176
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP 12,600 $289,296
Small Stockman Wealth Management, Inc. 10,725 $246,246
Filter: New 13 Increased 30 Reduced 27 Sold out 7 Unchanged 20
Showing 90 of 90
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Small Fourthstone LLC $19,281,315 18.97% 683,250
Mega BlackRock, Inc. $17,190,464 16.91% 609,159
Mega VANGUARD CAPITAL MANAGEMENT LLC $11,294,180 11.11% 400,219
Mega DIMENSIONAL FUND ADVISORS LP $7,705,187 7.58% 273,040
Mega GEODE CAPITAL MANAGEMENT, LLC $5,714,041 5.62% 202,482
Mega STATE STREET CORP $4,282,949 4.21% 151,770
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $2,833,062 2.79% 100,392
Small Elizabeth Park Capital Advisors, Ltd. $2,271,145 2.23% 80,480
Mega NORTHERN TRUST CORP Bank $1,969,048 1.94% 69,775
Mega LPL Financial LLC $1,613,534 1.59% 57,177
Large MARSHALL WACE, LLP $1,608,144 1.58% 56,986
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,576,425 1.55% 55,862
Mega VANGUARD PORTFOLIO MANAGEMENT LLC $1,452,455 1.43% 51,469
Mega MORGAN STANLEY $1,323,967 1.30% 46,916
Micro AMES NATIONAL CORP $1,313,838 1.29% 46,557
Mega AMERICAN CENTURY COMPANIES INC $1,275,290 1.25% 45,191
Mega GOLDMAN SACHS GROUP INC $1,251,331 1.23% 44,342
Mid SEGALL BRYANT & HAMILL, LLC $1,115,282 1.10% 39,521
Large RENAISSANCE TECHNOLOGIES LLC $1,071,908 1.05% 37,984
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $950,280 0.93% 33,674
Mega AQR CAPITAL MANAGEMENT LLC $907,889 0.89% 32,172
Small CHANNEL WEALTH LLC $882,834 0.87% 31,284
Mid RITHOLTZ WEALTH MANAGEMENT $878,657 0.86% 31,136
Large NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO $864,660 0.85% 30,640
Mid RBF Capital, LLC $846,600 0.83% 30,000
Mega FIRST TRUST ADVISORS LP $837,654 0.82% 29,683
Mega Bank of New York Mellon Corp Bank $776,951 0.76% 27,532
Large Connor, Clark & Lunn Investment Management Ltd. $761,290 0.75% 26,977
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $665,088 0.65% 23,568
Mid Arkadios Wealth Advisors $622,588 0.61% 22,062
Large NewEdge Advisors, LLC $565,190 0.56% 20,028
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC $489,927 0.48% 17,361
Mega Nuveen, LLC $416,272 0.41% 14,751
Mega CITADEL ADVISORS LLC $412,012 0.41% 14,600
Mid Compound Planning, Inc. $375,522 0.37% 13,307
Large Trexquant Investment LP $336,608 0.33% 11,928
Large Empowered Funds, LLC $320,381 0.32% 11,353
Small Foster Group, Inc. $278,051 0.27% 9,853
Mid OCCUDO QUANTITATIVE STRATEGIES LP $261,514 0.26% 9,267
Mega BANK OF AMERICA CORP /DE/ Bank $242,127 0.24% 8,580
Micro Larry Mathis Financial Planning, LLC $238,261 0.23% 8,443
Mega JANE STREET GROUP, LLC $214,472 0.21% 7,600
Mid XTX Topco Ltd $210,634 0.21% 7,464
Mega RHUMBLINE ADVISERS $186,562 0.18% 6,611
Mega DEUTSCHE BANK AG\ Bank $179,140 0.18% 6,348
Mega Vanguard Global Advisers, LLC $166,131 0.16% 5,887
Micro Clarity Asset Management, Inc. $144,599 0.14% 5,124
Large MetLife Investment Management, LLC $141,777 0.14% 5,024
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $126,228 0.12% 4,473
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $119,370 0.12% 4,230
Mega UBS Group AG $118,974 0.12% 4,216
Large JONES FINANCIAL COMPANIES LLLP $102,720 0.10% 3,640
Mega JPMORGAN CHASE & CO $102,099 0.10% 3,618
Mega WELLS FARGO & COMPANY/MN $94,959 0.09% 3,365
Mid Smartleaf Asset Management LLC $93,972 0.09% 3,330
Large Russell Investments Group, Ltd. $71,340 0.07% 2,528
Large CWM, LLC $63,438 0.06% 2,248
Mega BNP PARIBAS ARBITRAGE, SA $52,714 0.05% 1,868
Large Police & Firemen's Retirement System of New Jersey Pension $49,864 0.05% 1,767
Mega BARCLAYS PLC $43,740 0.04% 1,550
Large ACADIAN ASSET MANAGEMENT LLC $42,555 0.04% 1,508
Mega FMR LLC $33,214 0.03% 1,177
Mega PNC FINANCIAL SERVICES GROUP, INC. $25,792 0.03% 914
Micro West Financial Advisors, LLC $22,688 0.02% 804
Mega Legal & General Group Plc $22,434 0.02% 795
Mid Ameritas Investment Partners, Inc. $20,064 0.02% 711
Mid Tower Research Capital LLC (TRC) $18,201 0.02% 645
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $17,185 0.02% 609
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $13,573 0.01% 481
Mega CITIGROUP INC $11,654 0.01% 413
Large OSAIC HOLDINGS, INC. $11,400 0.01% 404
Mid Sterling Capital Management LLC $8,296 0.01% 294
Mid GAMMA Investing LLC $7,450 0.01% 264
Small City State Bank Bank $6,772 0.01% 240
Mid Farther Finance Advisors, LLC $4,233 0.00% 150
Small Essential Partners LLC $3,640 0.00% 129
Mid Optiver Holding B.V. $2,878 0.00% 102
Mid EverSource Wealth Advisors, LLC $2,509 0.00% 89
Mid Allworth Financial LP $1,495 0.00% 53
Large NISA INVESTMENT ADVISORS, LLC $1,213 0.00% 43
Mid MassMutual Private Wealth & Trust, FSB $1,157 0.00% 41
Micro True Wealth Design, LLC $1,157 0.00% 41
Mid IFP Advisors, Inc $903 0.00% 32
Mid ROTHSCHILD INVESTMENT LLC $451 0.00% 16
Small Root Financial Partners, LLC $282 0.00% 10
Mid Arax Advisory Partners $253 0.00% 9
Mid MAI Capital Management $225 0.00% 8
Small Covestor Ltd $169 0.00% 6
Small SJS Investment Consulting Inc. $84 0.00% 3
Small Sunbelt Securities, Inc. Broker-Dealer $28 0.00% 1

Report a Problem

Category
Description
Email (optional, for follow-up)