Rialytix insights

Largest RIA Firms in Oak Brook, Illinois by AUM

Explore registered investment advisers headquartered in Oak Brook, Illinois, ranked by reported regulatory AUM. Compare firm size, historical AUM, employee trends, and account activity across 12 firms with $5.5B in total reported AUM and median AUM of $399.7M.

Firms

Matching current profiles

Total AUM

$5.5B

Reported regulatory AUM

Median AUM

$399.7M

Across firms with AUM

Largest firm

$1.2B

Chicago Oakbrook Financial Group

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Top RIAs discovered by AUM

Compare RIAs using AUM growth, employee and account signals

Firm	Location	Current AUM↓	1YR AUM↕	3YR AUM↕	5YR AUM↕	Total AUM↕	Employee Signal↕	Account Signal↕
1. Chicago Oakbrook Financial Group CRD 333344 · Limited Liability Company	OAK BROOK, IL	$1.2B Oct 2026	+$301.9M+33.3%	—	—	+$301.9M+33.3%	+1 employees+5.6% over 1Y	+3,229 accounts+289.3% over 1Y
2. Huizenga Capital Management, LLC CRD 156524 · Limited Liability Company	OAK BROOK, IL	$996.7M Mar 2026	+$221.9M+28.6%	+$164.0M+19.7%	+$417.8M+72.2%	+$560.4M+128.4%	+1 employees+8.3% over 3Y	+5 accounts+31.3% over 3Y
3. Rock Island Capital CRD 161623 · Limited Liability Company	OAK BROOK, IL	$636.6M Mar 2026	+$4.8M+0.8%	+$29.6M+4.9%	+$203.7M+47.0%	+$518.7M+440.3%	+2 employees+25.0% over 3Y	+1 accounts+8.3% over 3Y
4. North Branch Capital Management, L.p. CRD 307344 · Limited Partnership	OAK BROOK, IL	$467.5M Apr 2026	+$35.3M+8.2%	+$233.2M+99.5%	+$284.1M+154.9%	+$223.9M+91.9%	+1 employees+14.3% over 3Y	+1 accounts+25.0% over 3Y
5. Inland Advisory Services, LLC CRD 338893 · Limited Liability Company	OAK BROOK, IL	$443.1M Aug 2026	—	—	—	—	—	—
6. Watershed Private Wealth CRD 316408 · Limited Liability Company	OAK BROOK, IL	$413.7M Aug 2026	+$111.7M+37.0%	+$227.9M+122.7%	—	—	+1 employees+50.0% over 3Y	+205 accounts+58.6% over 3Y
7. Squadron Capital Management LLC CRD 334296 · Limited Liability Company	OAK BROOK, IL	$385.7M Jun 2026	—	—	—	$0+0.0%	0 employees+0.0% over Total	0 accounts+0.0% over Total
8. Ergawealth Advisors, INC. CRD 290030 · Corporation	OAK BROOK, IL	$341.5M Mar 2026	+$24.8M+7.8%	+$140.9M+70.3%	—	+$172.7M+102.3%	-4 employees-44.4% over 3Y	+150 accounts+16.2% over 3Y
9. Stonebridge Wealth Management LLC CRD 285693 · Limited Liability Company	OAK BROOK, IL	$283.3M May 2026	+$51.2M+22.1%	+$101.5M+55.8%	+$125.0M+78.9%	+$177.8M+168.7%	0 employees+0.0% over 3Y	+127 accounts+14.3% over 3Y
10. Kuhn Capital Partners CRD 283028 · Limited Liability Company	OAK BROOK, IL	$169.9M Mar 2026	+$44.0M+35.0%	+$138.4M+439.9%	+$138.4M+439.9%	+$165.2M+3514.8%	-4 employees-44.4% over 3Y	-65 accounts-19.3% over 3Y
11. Dillow Wealth Management LLC CRD 313192 · Limited Liability Company	OAK BROOK, IL	$106.3M Feb 2026	-$62.3M-37.0%	+$3.3M+3.2%	—	—	+1 employees+100.0% over 3Y	+129 accounts+716.7% over 3Y
12. Tall Pines Capital, LLC CRD 286089 · Limited Liability Company	OAK BROOK, IL	$25.0M May 2026	-$5.0M-16.8%	+$6.2M+33.0%	+$12.7M+102.5%	+$22.9M+1070.7%	0 employees+0.0% over 3Y	+35 accounts+53.8% over 3Y

Methodology

Top firms are ranked by their current AUM values. Growth $ and % values compare current reported AUM, employee count, and account counts against the latest historical filing on or before the 1 year, 3 year, and 5 year lookback dates, plus the earliest available historical filing for total growth.Metrics may show a dash where sufficient historical filing data is unavailable for the lookback period.