Q3 2026 13F · SEC CIK 903783

Old Second National Bank of Aurora

Bank & trustFiled 2026-10-22 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $500.8M
Reported positions: 276
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 276 positions worth $500.8M in its Q3 2026 13F, filed 2026-10-22. Its largest holdings were Mfs Active (MFSI, 8.9%), Ishares Tr (IJH, 5.9%), Nvidia Corporation (NVDA, 4.0%). 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 276 positions.

Weights are shares of the filer's total reported 13F value, compared with Q2 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	Q2 2026	Shares	Share change	Reported value
MFSIMfs Active	8.9%	8.4%	1,360,534	-1.0%	$44.4M
IJHIshares Tr	5.9%	6.1%	411,154	-1.2%	$29.6M
NVDANvidia Corporation	4.0%	3.9%	86,639	-15.1%	$19.8M
MSFTMicrosoft Corp	3.6%	2.7%	35,618	-5.6%	$18.3M
AAPLApple Inc	3.3%	2.9%	49,516	-8.1%	$16.5M
AVGOBroadcom Inc	3.2%	3.6%	44,979	-10.1%	$15.8M
BSCRInvesco Exch Trd Slf Idx Fd	2.9%	2.9%	737,031	-4.5%	$14.4M
GOOGLAlphabet Inc	2.8%	2.9%	40,262	-7.7%	$13.9M
VGKVanguard Ftse Europe ETF	2.4%	2.4%	140,206	-1.1%	$12.2M
VWOVanguard Intl Equity Index F	2.1%	2.1%	181,299	-1.1%	$10.8M
MSMorgan Stanley	1.9%	2.1%	50,940	-2.7%	$9.6M
LLYEli Lilly & Co	1.9%	1.9%	8,253	-3.2%	$9.5M
JPMJpmorgan Chase & Co	1.9%	2.2%	28,862	-18.5%	$9.5M
VEAVanguard Ftse Developed Markets Index Fu	1.9%	1.9%	134,532	-2.5%	$9.5M
KLACKla Corp	1.9%	2.8%	47,594	-1.6%	$9.3M
SPYState Str Spdr S&p 500 ETF T	1.8%	1.7%	12,027	-1.4%	$9.2M
CMICummins Inc	1.6%	2.0%	15,355	+2.5%	$7.9M
AMZNAmazon Com Inc	1.6%	1.5%	31,149	-6.7%	$7.8M
BLKBlackrock Inc	1.5%	1.3%	6,967	-3.5%	$7.4M
VTVanguard Intl Equity Index F	1.5%	1.4%	46,439	-2.5%	$7.3M
JNJJohnson & Johnson	1.4%	1.3%	26,405	-2.9%	$7.0M
BSCSInvesco Exch Trd Slf Idx Fd	1.4%	1.3%	347,316	+2.1%	$7.0M
GLWCorning Inc	1.4%	2.2%	45,436	-1.7%	$7.0M
SPLGSpdr Series Trust	1.3%	1.2%	72,763	-1.0%	$6.5M
PHMPulte Group Inc	1.2%	1.4%	51,833	-1.8%	$6.0M
CVXChevron Corporation	1.1%	0.8%	26,608	-2.1%	$5.4M
BSJRInvesco Exch Trd Slf Idx Fd	1.1%	1.0%	245,109	+3.6%	$5.4M
BXBlackstone Inc	1.0%	1.0%	45,764	-1.0%	$5.1M
ABBVAbbvie Inc	1.0%	0.9%	18,811	-2.3%	$4.9M
VLOValero Energy Corp	1.0%	0.9%	12,508	-35.1%	$4.8M
PEPPepsico Inc	1.0%	0.8%	37,904	+21.1%	$4.8M
EOGEog Res Inc	1.0%	0.9%	34,745	-0.8%	$4.8M
METMetlife Inc	0.9%	0.8%	50,385	-2.7%	$4.7M
ARCCAres Capital Corp	0.9%	0.8%	228,703	+2.0%	$4.4M
BXSLBlackstone Secd Lending Fd	0.9%	0.8%	178,911	+2.0%	$4.3M
ETNEaton Corp PLC	0.8%	0.8%	9,839	-2.7%	$4.2M
NOCNorthrop Grumman Corp	0.8%	0.7%	8,476	+15.7%	$4.1M
FITBFifth Third Bancorp	0.8%	0.9%	80,915	-0.7%	$4.1M
SOFISofi Technologies Inc	0.8%	0.8%	256,842	+6.6%	$4.0M
VIKViking Hldgs Ltd	0.8%	1.0%	50,692	+3.8%	$4.0M
COFCapital One Finl Corp	0.7%	0.7%	18,932	-0.2%	$3.7M
CIBRFirst Tr Exchange-Traded Fd	0.7%	0.6%	34,557	-1.7%	$3.6M
PLDPrologis Inc	0.7%	0.7%	25,267	-3.2%	$3.3M
NSCNorfolk Southn Corporation	0.6%	0.7%	10,491	-4.9%	$3.2M
PGProcter & Gamble Co	0.6%	0.5%	22,275	+12.1%	$3.2M
NEENextera Energy Inc	0.6%	0.7%	42,248	+0.4%	$3.2M
MAMastercard Incorporated	0.6%	0.6%	5,723	-10.7%	$3.2M
WELLWelltower Inc	0.6%	0.5%	12,392	+0.2%	$2.9M
TSMTaiwan Semiconductor Manufac	0.5%	—	5,823	—	$2.7M
ABTAbbott Laboratories	0.5%	—	26,453	—	$2.6M

What Old Second National Bank of Aurora bought and sold in Q3 2026, against Q2 2026.

New positions

Q2 2026's filing was too long to tell new positions apart.

Added to

Reduced

VLO Valero Energy Corp-35.1% shares
JPM Jpmorgan Chase & Co-18.5% shares
NVDA Nvidia Corporation-15.1% shares
MA Mastercard Incorporated-10.7% shares
AVGO Broadcom Inc-10.1% shares
AAPL Apple Inc-8.1% shares
GOOGL Alphabet Inc-7.7% shares
AMZN Amazon Com Inc-6.7% shares

Left the top 50

UPS United Parcel Svcs Incwas 0.5%
BMI Badger Meter Incwas 0.5%

Share counts compared with the Q2 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, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 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
Q3 2026	$500.8M	276
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

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 Q3 2026 and filed Oct 22, 2026, lists 276 positions worth $500.8M. The largest are Mfs Active (MFSI) at 8.9%, Ishares Tr (IJH) at 5.9%, Nvidia Corporation (NVDA) at 4.0%, Microsoft Corp (MSFT) at 3.6% and Apple Inc (AAPL) at 3.3%.

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

In Q3 2026, Old Second National Bank of Aurora added Pepsico Inc (PEP) (+21.1% shares), Northrop Grumman Corp (NOC) (+15.7% shares) and Procter & Gamble Co (PG) (+12.1% shares), compared with its Q2 2026 filing.

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

In Q3 2026, Old Second National Bank of Aurora cut from its top 50 United Parcel Svcs Inc (UPS), cut from its top 50 Badger Meter Inc (BMI), Valero Energy Corp (VLO) (-35.1% shares), Jpmorgan Chase & Co (JPM) (-18.5% shares) and Nvidia Corporation (NVDA) (-15.1% shares), compared with its Q2 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 Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.