Q2 2026 13F · SEC CIK 903783

Old Second National Bank of Aurora

Bank & trustFiled 2026-07-21 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $530.5M
Reported positions: 275
Top holdings a year, 3 yrs: +22.3%
Average holding period: 6.3 yrs

Old Second National Bank of Aurora is a bank & trust that reported 275 positions worth $530.5M in its Q2 2026 13F, filed 2026-07-21. Its largest holdings were Mfs Active Exchange Traded F (MFSI, 8.4%), Ishares Tr (IJH, 6.1%), Nvidia Corporation Com (NVDA, 3.9%). A portfolio copying its top holdings returned 22.3% a year over the last 3 years, against 20.4% for the S&P 500.

Old Second National Bank of Aurora holdings largest 50 of 275 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Old Second National Bank of Aurora 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
MFSIMfs Active Exchange Traded F	8.4%	8.5%	1,373,983	-0.8%	$44.6M
IJHIshares Tr	6.1%	5.9%	416,280	-2.1%	$32.1M
NVDANvidia Corporation Com	3.9%	3.8%	102,070	-3.9%	$20.4M
AVGOBroadcom Inc	3.6%	3.4%	50,023	-6.9%	$18.9M
AAPLApple Inc	2.9%	2.9%	53,905	-3.5%	$15.6M
GOOGLAlphabet Inc	2.9%	2.8%	43,609	-7.0%	$15.6M
BSCRInvesco Exch Trd Slf Idx Fd	2.9%	3.2%	771,905	-3.0%	$15.1M
KLACKla Corp	2.8%	1.7%	48,348	+782.9%	$14.6M
MSFTMicrosoft Corp	2.7%	2.8%	37,750	+4.6%	$14.1M
VGKVanguard Intl Equity Index F	2.4%	2.6%	141,833	-7.8%	$12.6M
GLWCorning Inc.	2.2%	2.2%	46,216	-41.2%	$11.8M
JPMJpmorgan Chase & Co	2.2%	2.2%	35,429	-2.7%	$11.6M
MSMorgan Stanley Com New	2.1%	1.9%	52,374	-5.7%	$10.9M
VWOVanguard Intl Equity Index F	2.1%	—	183,240	—	$10.9M
CMICummins Inc	2.0%	1.8%	14,981	-9.9%	$10.7M
LLYLilly Eli & Co	1.9%	1.7%	8,525	-4.0%	$10.2M
VEAVanguard Tax-Managed Fds	1.9%	1.8%	137,962	+3.5%	$9.8M
SPYSpdr S&p 500 ETF Tr	1.7%	1.7%	12,200	-1.5%	$9.1M
AMZNAmazon Com Inc Com	1.5%	1.5%	33,370	-1.9%	$8.0M
VTVanguard Total World Stock Index Fund Et	1.4%	1.4%	47,643	-4.2%	$7.5M
PHMPulte Group Inc	1.4%	1.3%	52,790	-2.3%	$7.2M
BLKBlackrock Inc	1.3%	1.5%	7,219	-2.7%	$6.9M
BSCSInvesco Exch Trd Slf Idx Fd	1.3%	1.4%	340,237	+0.0%	$6.9M
JNJJohnson & Johnson	1.3%	1.4%	27,204	-4.3%	$6.9M
SPLGSpdr Series Trust	1.2%	1.1%	73,470	+10.3%	$6.5M
BXBlackstone Inc Com	1.0%	0.9%	46,212	+24.0%	$5.4M
BSJRInvesco Exch Trd Slf Idx Fd	1.0%	1.2%	236,667	-9.2%	$5.3M
VIKViking Holdings Ltd	1.0%	0.8%	48,856	-5.7%	$5.1M
VLOValero Energy Corp	0.9%	1.1%	19,275	-7.9%	$5.0M
ABBVAbbvie Inc	0.9%	0.9%	19,247	-1.5%	$4.8M
FITBFifth Third Bancorp	0.9%	0.8%	81,515	-0.5%	$4.6M
EOGEog Res Inc	0.9%	0.8%	35,023	+28.9%	$4.5M
CVXChevron Corp New	0.8%	0.9%	27,187	+27.5%	$4.5M
METMetlife Inc	0.8%	0.8%	51,772	-1.1%	$4.4M
SOFISofi Technologies Inc	0.8%	0.6%	240,860	+38.9%	$4.3M
ETNEaton Corp PLC	0.8%	0.8%	10,108	-1.4%	$4.3M
PEPPepsico Inc	0.8%	1.0%	31,312	-3.1%	$4.2M
BXSLBlackstone Secd Lending Fd	0.8%	—	175,465	—	$4.2M
ARCCAres Capital Corp.	0.8%	—	224,251	—	$4.2M
COFCapital One Financial Corp	0.7%	0.7%	18,973	+4.5%	$3.8M
NOCNorthrop Grumman Corp	0.7%	1.1%	7,327	-2.3%	$3.7M
NEENextera Energy Inc Com	0.7%	0.8%	42,096	+7.0%	$3.7M
PLDPrologis Inc	0.7%	0.7%	26,106	-3.7%	$3.5M
NSCNorfolk Southn Corp	0.7%	0.7%	11,037	-1.2%	$3.5M
MAMastercard Inc.	0.6%	0.6%	6,407	+2.1%	$3.3M
CIBRFirst Tr Exchange-Traded Fd	0.6%	—	35,159	—	$3.2M
PGProcter & Gamble Co Com	0.5%	0.6%	19,873	-0.1%	$2.9M
UPSUnited Parcel Svcs Inc Cl B	0.5%	—	26,819	—	$2.9M
WELLWelltower Inc	0.5%	0.6%	12,363	-10.0%	$2.8M
BMIBadger Meter Inc	0.5%	—	18,585	—	$2.8M

What Old Second National Bank of Aurora bought and sold in Q2 2026, against Q1 2026.

New positions

Q1 2026's filing was too long to tell new positions apart.

Added to

KLAC Kla Corp+782.9% shares
SOFI Sofi Technologies Inc+38.9% shares
EOG Eog Res Inc+28.9% shares
CVX Chevron Corp New+27.5% shares
BX Blackstone Inc Com+24.0% shares
SPLG Spdr Series Trust+10.3% shares
NEE Nextera Energy Inc Com+7.0% shares

Reduced

GLW Corning Inc.-41.2% shares
WELL Welltower Inc-10.0% shares
CMI Cummins Inc-9.9% shares
BSJR Invesco Exch Trd Slf Idx Fd-9.2% shares
VLO Valero Energy Corp-7.9% shares
VGK Vanguard Intl Equity Index F-7.8% shares
GOOGL Alphabet Inc-7.0% shares
AVGO Broadcom Inc-6.9% shares

Left the top 50

Share counts compared with the Q1 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +22.3% /yr; S&P 500 +20.1%
3 years: +22.3% /yr; S&P 500 +20.4%
5 years: +11.1% /yr; S&P 500 +11.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q2 2026	$530.5M	275
Q1 2026	$483.9M	280
Q4 2025	$500.0M	288
Q3 2025	$485.4M	284
Q2 2025	$458.0M	299
Q1 2025	$424.7M	310
Q4 2024	$439.8M	508
Q3 2024	$414.2M	329
Q2 2024	$390.1M	338
Q1 2024	$384.9M	327
Q4 2023	$363.2M	346
Q3 2023	$328.7M	345

Questions about Old Second National Bank of Aurora's portfolio

What stocks does Old Second National Bank of Aurora own?

Old Second National Bank of Aurora's latest 13F, for Q2 2026 and filed Jul 21, 2026, lists 275 positions worth $530.5M. The largest are Mfs Active Exchange Traded F (MFSI) at 8.4%, Ishares Tr (IJH) at 6.1%, Nvidia Corporation Com (NVDA) at 3.9%, Broadcom Inc (AVGO) at 3.6% and Apple Inc (AAPL) at 2.9%.

What did Old Second National Bank of Aurora buy last quarter?

In Q2 2026, Old Second National Bank of Aurora added Kla Corp (KLAC) (+782.9% shares), Sofi Technologies Inc (SOFI) (+38.9% shares) and Eog Res Inc (EOG) (+28.9% shares), compared with its Q1 2026 filing.

What did Old Second National Bank of Aurora sell last quarter?

In Q2 2026, Old Second National Bank of Aurora cut from its top 50 Franklin Ftse India ETF (FLIN), cut from its top 50 Netflix Inc Total (NFLX), cut from its top 50 Zoetis Inc (ZTS), cut from its top 50 Walmart Inc (WMT), cut from its top 50 Abbott Laboratories (ABT), Corning Inc. (GLW) (-41.2% shares), Welltower Inc (WELL) (-10.0% shares) and Cummins Inc (CMI) (-9.9% shares), compared with its Q1 2026 filing.

How has Old Second National Bank of Aurora's portfolio performed?

A portfolio copying Old Second National Bank of Aurora's 20 largest 13F holdings each quarter, from the day each filing was public, returned +22.3% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +22.3% against +20.1%. Over 5 years: +11.1% a year against +11.6%.

When is Old Second National Bank of Aurora's next 13F filing due?

13F filings are due 45 days after each quarter ends. Old Second National Bank of Aurora's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.