Arkolith/Funds/Auto-Owners Insurance Co

Auto-Owners Insurance Co

CIK 1964189
Holdings as of Mar 31, 2026·disclosed Apr 10, 2026·~10-day 13F lag·13F-HR
Inactive

Auto-Owners Insurance Co holds a focused book of 101 stocks worth $4.8B as of Q1 2026 (disclosed Apr 10, 2026, a ~45-day 13F lag). This quarter they opened QNITY ELECTRONICS INC and trimmed ALPHABET INC. Their largest long position is SPDR INDEX SHS FDS at 19% of the equity book.

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holdings, largest changes, and filing provenance.
Opened
3
new positions
Added to
3
existing
Trimmed
7
reduced
Sold out
1
exited

Concentration

Top-heavy: focused book

Top 5 holdings
54%
Top 10 holdings
69%
Top 20 holdings
85%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

7% mapped to company sectors

ETF / fund or unclassified
93%
Health Care
2%
Consumer Staples
1%
Industrials
1%
Utilities
1%
Financials
0%
Materials
0%
Communication Services
0%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
  • QNITY ELECTRONICS INC
    New$25.2M
  • New$8.5M
  • +36%$232K
  • FLOWSERVE CORP
    New$205K
  • CISCO SYS INC
    ~0%$7K
  • LINDE PLC
    +0.3%$5K
Trimmed / exited
  • BERKSHIRE HATHAWAY INC DEL
    ~0%$38K
  • APPLIED MATLS INC
    −0.3%$15K
  • ALPHABET INC
    ~0%$13K
  • META PLATFORMS INC
    ~0%$11K
  • WORKDAY INC
    −0.1%$4K
  • AMAZON COM INC
    ~0%$2K

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

106 positions
#SecurityValueShares% PortLast moveHistory
1SPDR Index SHS FDS
COM
$896.5M19.64M
18.8%
Held
2Ishares TR
CORE S&P TTL STK
$512.1M3.60M
10.7%
Held
3SPDR Series Trust
STATE STREET SPD
$371.8M1.46M
7.8%
Held
4Ishares TR
EAFE VALUE ETF
$341.1M4.59M
7.1%
Held
5Ishares TR
CORE MSCI INTL
$217.1M2.60M
4.5%
Held
6Schwab Strategic TR
FUNDAMENTAL INTL
$174.7M3.64M
3.7%
Held
7Alphabet Inc
CAP STK CL C
$164.4M573.0K
3.4%
~0%
Reduced · −47 sh
8Vanguard Whitehall FDS
HIGH DIV YLD
$153.4M1.04M
3.2%
Held
9Ishares TR
CORE S&P US VLU
$138.6M1.35M
2.9%
Held
10SPDR Series Trust
STATE STREET SPD
$124.8M2.74M
2.6%
Held
11Berkshire Hathaway Inc Del
CL A
$119.9M167
2.5%
Held
12Vanguard Intl Equity Index F
FTSE EMR MKT ETF
$97.0M1.79M
2.0%
Held
13Meta Platforms Inc
CL A
$91.3M159.5K
1.9%
~0%
Reduced · −19 sh
14Amazon Com Inc
COM
$88.8M426.5K
1.9%
~0%
Reduced · −10 sh
15Johnson & Johnson
COM
$82.0M335.4K
1.7%
Held
16SPDR Series Trust
STATE STREET SPD
$78.7M1.33M
1.6%
Held
17Vanguard Tax-Managed FDS
VAN FTSE DEV MKT
$75.5M1.18M
1.6%
Held
18Vanguard Index FDS
SMALL CP ETF
$73.8M281.6K
1.5%
Held
19Dow Inc
COM
$67.1M1.61M
1.4%
Held
20Ge Aerospace
COM NEW
$60.5M213.4K
1.3%
Held
21Polaris Inc
COM
$56.4M1.03M
1.2%
Held
22Pepsico Inc
COM
$53.3M343.2K
1.1%
Held
23Cisco Sys Inc
COM
$52.3M674.5K
1.1%
~0%
Added · +87 sh
24Ishares TR
CORE DIV GRWTH
$48.4M689.5K
1.0%
Held
25Ge Vernova Inc
COM
$46.6M53.3K
1.0%
Held
26Microsoft Corp
COM
$46.0M124.3K
1.0%
~0%
Reduced · −2 sh
27Enterprise Prods Partners L
COM
$37.8M1.00M
0.8%
Held
28Vanguard World FD
CONSUM DIS ETF
$33.3M92.7K
0.7%
Held
29Becton Dickinson & Co
COM
$33.0M209.8K
0.7%
Held
30US Bancorp Del
COM NEW
$32.5M625.0K
0.7%
Held
31Select Sector SPDR TR
STATE STREET REA
$31.3M766.6K
0.7%
Held
32Ge Healthcare Technologies I
COMMON STOCK
$29.5M414.3K
0.6%
Held
33Ishares Inc
EM MKTS DIV ETF
$28.2M820.0K
0.6%
Held
34Qnity Electronics Inc
COMMON STOCK
$25.2M218.3K
0.5%
New
New position
35Ishares Inc
CORE MSCI EMKT
$25.1M360.0K
0.5%
Held
36Dupont De Nemours Inc
COM
$20.0M436.6K
0.4%
Held
37Baxter Intl Inc
COM
$17.6M1.05M
0.4%
Held
38Carnival Corp
UNIT 99/99/9999
$16.8M650.0K
0.4%
Held
39Kraft Heinz Co
COM
$15.3M679.5K
0.3%
Held
40Amerisafe Inc
COM
$14.2M426.9K
0.3%
Held
41Truist Finl Corp
COM
$13.2M288.0K
0.3%
Held
423M Co
COM
$13.2M90.9K
0.3%
Held
43Vanguard Index FDS
TOTAL STK MKT
$11.7M36.6K
0.2%
Held
44RTX Corporation
COM
$10.6M55.1K
0.2%
Held
45Avalonbay Cmntys Inc
COM
$10.6M65.0K
0.2%
Held
46Enbridge Inc
COM
$9.7M179.1K
0.2%
Held
47Waters Corp
COM
$8.5M28.4K
0.2%
New
New position
48FMC Corp
COM NEW
$7.7M450.0K
0.2%
Held
49Honda Motor Ltd
ADR ECH CNV IN 3
$7.1M291.1K
0.1%
Held
50Workday Inc
CL A
$6.2M47.6K
0.1%
−0.1%
Reduced · −33 sh
Showing 50 of 106 positions

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q1 2026Mar 31, 2026Apr 10, 2026188$4.8B13F-HR
Q4 2025Dec 31, 2025Mar 9, 2026181$4.8B13F-HR/A
Q3 2025Sep 30, 2025Nov 19, 2025186$3.9B13F-HR/A
Q2 2025Jun 30, 2025Aug 1, 2025187$4.5B13F-HR
Q1 2025Mar 31, 2025May 6, 2025184$3.8B13F-HR
Q4 2024Dec 31, 2024Feb 14, 2025181$4.4B13F-HR
Q3 2024Sep 30, 2024Nov 12, 2024197$4.1B13F-HR
Q2 2024Jun 30, 2024Aug 14, 2024195$3.8B13F-HR
Q1 2024Mar 31, 2024May 8, 2024190$3.8B13F-HR
Q4 2023Dec 31, 2023Feb 13, 2024189$3.3B13F-HR
Q3 2023Sep 30, 2023Oct 11, 2023195$3.0B13F-HR
Q2 2023Jun 30, 2023Aug 2, 2023192$3.1B13F-HR
Q1 2023Mar 31, 2023May 9, 2023191$2.9B13F-HR
Q4 2022Dec 31, 2022Feb 14, 2023150$2.7B13F-HR
Amended / restated
  • Q4 2025 · filed Mar 9, 202613F-HR · superseded
  • Q3 2025 · filed Nov 17, 202513F-HR · superseded

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.