CIK: 0001455288
Total reported value
$449.8M
Reporting period: 2026-03-31 · Number of holdings: 58
Shelter Mutual Insurance Co disclosed 58 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $449.8M and a quarterly turnover rate of 10.0%.
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Shelter Mutual Insurance Co's disclosed holdings carry a Herfindahl concentration index of 0.027 — mathematically equivalent to about 38 equally-sized positions, close to its 58 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.74), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.3 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 44% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim ORCL
0.0% -$4.0M
Add XOM
0.0% $3.2M
Add CAT
0.0% $2.8M
Add SHEL
0.0% $2.2M
Trim QCOM
0.0% -$2.2M
Trim IBM
0.0% -$2.1M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | BRK-A | Berkshire Hathaway Inc-cl A | Stock-Other | 5.43% | -0.29% | — | |
| 2 | VXUS | Vanguard Total Intl Stock | ETF-Other | 5.40% | +0.10% | — | |
| 3 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 4.72% | -0.15% | +1.87% | |
| 4 | WMT | Walmart INC | Stock-Consumer Staples | 3.36% | +0.33% | — | |
| 5 | CAT | Caterpillar INC | Stock-Industrials | 3.27% | +0.62% | — | |
| 6 | IEFA | Ishares Core Msci Eafe ETF | ETF-Other | 3.23% | +0.03% | — | |
| 7 | VTI | Vanguard Total Stock Mkt ETF | ETF-Other | 3.13% | -0.15% | — | |
| 8 | CME | Cme Group INC | Stock-Financials | 3.02% | +0.22% | — | |
| 9 | USIG | Ishares Broad Usd Investment | ETF-Other | 3.01% | -0.15% | -3.66% | |
| 10 | LIN | Linde plc | Stock-Materials | 2.91% | +0.40% | — | |
| 11 | ABBV | Abbvie INC | Stock-Healthcare | 2.75% | -0.15% | — | |
| 12 | VRTX | Vertex Pharmaceuticals INC | Stock-Healthcare | 2.74% | -0.05% | — | |
| 13 | V | Visa Inc-class A Shares | Stock-Financials | 2.73% | -0.45% | — | |
| 14 | ORCL | Oracle CORP | Stock-Tech | 2.71% | -0.89% | — | |
| 15 | DE | Deere & Co | Stock-Industrials | 2.54% | +0.43% | — | |
| 16 | XOM | Exxon Mobil CORP | Stock-Energy | 2.46% | +0.71% | — | |
| 17 | MBB | Ishares Mbs ETF | ETF-Other | 2.39% | +0.06% | +3.32% | |
| 18 | SHEL | Shell Plc-adr | Stock-Energy | 2.35% | +0.49% | — | |
| 19 | LQD | Ishr Ibx Usd Invgd Cb Etf-ui | ETF-Corp Bonds | 2.31% | -0.03% | — | |
| 20 | LOW | Lowe's Cos INC | Stock-Consumer Disc | 2.16% | -0.05% | — | |
| 21 | IBM | Intl Business Machines CORP | Stock-Tech | 2.07% | -0.47% | — | |
| 22 | ITW | Illinois Tool Works | Stock-Industrials | 2.07% | +0.10% | — | |
| 23 | AXP | American Express Co | Stock-Financials | 1.93% | -0.44% | — | |
| 24 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 1.92% | +0.01% | — | |
| 25 | UNP | Union Pacific CORP | Stock-Industrials | 1.92% | +0.09% | — | |
| 26 | JPM | Jpmorgan Chase & Co | Stock-Financials | 1.90% | -0.18% | — | |
| 27 | PEP | Pepsico INC | Stock-Consumer Staples | 1.76% | +0.13% | — | |
| 28 | NEE | Nextera Energy INC | Stock-Utilities | 1.70% | +0.22% | — | |
| 29 | VRSK | Verisk Analytics INC | Stock-Industrials | 1.67% | -0.31% | — | |
| 30 | BHP | Bhp Group Ltd-spon Adr | Stock-Materials | 1.53% | +0.26% | — | |
| 31 | QCOM | Qualcomm INC | Stock-Tech | 1.46% | -0.49% | — | |
| 32 | TGT | Target CORP | Stock-Consumer Disc | 1.28% | +0.24% | — | |
| 33 | AGG | Ishares Core U.s. Aggregate | ETF-Other | 1.27% | -0.01% | — | |
| 34 | BND | Vanguard Total Bond Market | ETF-Other | 1.25% | — | — | |
| 35 | IEMG | Ishares Core Msci Emerging | ETF-Emerging Markets | 1.20% | +0.04% | — | |
| 36 | BAB | Invesco Taxable Municipal Bo | ETF-Other | 1.19% | -0.01% | — | |
| 37 | IGIB | Ishares 5-10y Inv Grade CORP | ETF-Corp Bonds | 1.15% | -0.02% | — | |
| 38 | BKNG | Booking Holdings INC | Stock-Consumer Disc | 1.03% | -0.28% | — | |
| 39 | GILD | Gilead Sciences INC | Stock-Healthcare | 1.00% | +0.12% | — | |
| 40 | IXUS | Ishares Core Intl Stock ETF | ETF-Other | 0.94% | -0.02% | -3.86% | |
| 41 | PFE | Pfizer INC | Stock-Healthcare | 0.91% | +0.10% | — | |
| 42 | BN | Brookfield CORP | Stock-Financials | 0.76% | -0.10% | — | |
| 43 | BMY | Bristol-myers Squibb Co | Stock-Healthcare | 0.73% | +0.08% | — | |
| 44 | GOVT | Ishares US Treasury Bond ETF | ETF-Gov Bonds | 0.70% | — | -0.50% | |
| 45 | BLV | Vanguard Long-term Bond ETF | ETF-Other | 0.58% | — | — | |
| 46 | OTIS | Otis Worldwide CORP | Stock-Industrials | 0.53% | -0.08% | — | |
| 47 | MKL | Markel Group INC | Stock-Financials | 0.51% | -0.07% | — | |
| 48 | HAS | Hasbro INC | Stock-Consumer Disc | 0.49% | +0.06% | — | |
| 49 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 0.37% | -0.02% | — | |
| 50 | STZ | Constellation Brands Inc-a | Stock-Consumer Staples | 0.34% | +0.02% | — |
Performance for Q3 2026
-0.6%
Performance Last 4 Quarters
+13.8%
Based on 67% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 58 | $449.8M | 10 | |
| 2025-12-31 | 58 | $448.3M | 10 | |
| 2025-09-30 | 58 | $445.9M | 12 | |
| 2025-06-30 | 58 | $431.4M | 0 | |
| 2025-03-31 | 57 | $414.8M | 100 | |
| 2024-12-31 | 57 | $401.2M | 0 | |
| 2024-09-30 | 57 | $418.7M | 0 | |
| 2024-06-30 | 58 | $384.3M | 0 | |
| 2024-03-31 | 68 | $388.1M | 0 | |
| 2023-12-31 | 58 | $362.5M | 0 | |
| 2023-09-30 | 60 | $358.4M | 0 | |
| 2023-06-30 | 67 | $411.6M | 0 | |
| 2023-03-31 | 54 | $358.8M | 0 | |
| 2022-12-31 | 54 | $348.4M | 0 | |
| 2022-09-30 | 53 | $308.8M | 0 | |
| 2022-06-30 | 54 | $330.1M | 0 | |
| 2022-03-31 | 53 | $381.3M | 0 | |
| 2021-12-31 | 52 | $385.6M | 0 | |
| 2021-09-30 | 52 | $354.8M | 0 | |
| 2021-06-30 | 50 | $358.5M | 100 | |
| 2021-03-31 | 52 | $356.1M | 15 | |
| 2020-12-31 | 48 | $318.7M | 18 | |
| 2020-09-30 | 48 | $291.6M | 12 | |
| 2020-06-30 | 47 | $267.9M | 23 | |
| 2020-03-31 | 41 | $238.8M | 22 | |
| 2019-12-31 | 44 | $294.5M | 31 | |
| 2019-09-30 | 44 | $342.6M | 9 | |
| 2019-06-30 | 44 | $350.2M | 15 | |
| 2019-03-31 | 44 | $339.3M | 14 | |
| 2018-12-31 | 45 | $312.4M | 19 | |
| 2018-09-30 | 45 | $357.5M | 8 | |
| 2018-06-30 | 45 | $337.5M | 20 | |
| 2018-03-31 | 42 | $334.7M | 12 | |
| 2017-12-31 | 41 | $335.3M | 13 | |
| 2017-09-30 | 43 | $320.6M | 14 | |
| 2017-06-30 | 42 | $326.1M | 10 | |
| 2017-03-31 | 42 | $326.3M | 10 | |
| 2016-12-31 | 42 | $325.0M | 6 | |
| 2016-09-30 | 42 | $322.7M | 9 | |
| 2016-06-30 | 45 | $329.7M | 9 | |
| 2016-03-31 | 43 | $325.7M | 19 | |
| 2015-12-31 | 44 | $321.4M | 8 | |
| 2015-09-30 | 44 | $305.4M | 10 | |
| 2015-06-30 | 43 | $332.0M | 12 | |
| 2015-03-31 | 41 | $319.3M | 26 | |
| 2014-12-31 | 44 | $371.8M | 12 | |
| 2014-09-30 | 45 | $363.5M | 6 | |
| 2014-06-30 | 45 | $365.8M | 10 | |
| 2014-03-31 | 49 | $363.9M | 9 | |
| 2013-12-31 | 49 | $378.0M | 8 | |
| 2013-09-30 | 49 | $350.0M | 6 | |
| 2013-06-30 | 47 | $338.9M | 0 |
Shelter Mutual Insurance Co's most significant position changes for 2026-03-31: Sold out: Ishares Russell Mid-cap ETF (IWR); New buy: Ishares Msci USA Value Facto (VLUE); Trim: Ishares Broad Usd Investment (USIG) — shares -3.66%; Add: Ishares Core S&p 500 ETF (IVV) — shares +1.87%; Add: Ishares Mbs ETF (MBB) — shares +3.32%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | XOM | Exxon Mobil CORP | +0.7% | — | Unchanged |
| 2 | CAT | Caterpillar INC | +0.6% | — | Unchanged |
| 3 | SHEL | Shell Plc-adr | +0.5% | — | Unchanged |
| 4 | DE | Deere & Co | +0.4% | — | Unchanged |
| 5 | LIN | Linde plc | +0.4% | — | Unchanged |
| 6 | WMT | Walmart INC | +0.3% | — | Unchanged |
| 7 | BHP | Bhp Group Ltd-spon Adr | +0.3% | — | Unchanged |
| 8 | TGT | Target CORP | +0.2% | — | Unchanged |
| 9 | NEE | Nextera Energy INC | +0.2% | — | Unchanged |
| 10 | CME | Cme Group INC | +0.2% | — | Unchanged |
| 11 | PEP | Pepsico INC | +0.1% | — | Unchanged |
| 12 | GILD | Gilead Sciences INC | +0.1% | — | Unchanged |
| 13 | VXUS | Vanguard Total Intl Stock | +0.1% | — | Unchanged |
| 14 | ITW | Illinois Tool Works | +0.1% | — | Unchanged |
| 15 | PFE | Pfizer INC | +0.1% | — | Unchanged |
| 16 | UNP | Union Pacific CORP | +0.1% | — | Unchanged |
| 17 | BMY | Bristol-myers Squibb Co | +0.1% | — | Unchanged |
| 18 | MBB | Ishares Mbs ETF | +0.1% | +3.32% | Add |
| 19 | HAS | Hasbro INC | +0.1% | — | Unchanged |
| 20 | TLH | Ishares 10-20 Year Treasury | 0% | +55.65% | Add |
| 21 | IEMG | Ishares Core Msci Emerging | 0% | — | Unchanged |
| 22 | IEFA | Ishares Core Msci Eafe ETF | 0% | — | Unchanged |
| 23 | STZ | Constellation Brands Inc-a | 0% | — | Unchanged |
| 24 | PG | Procter & Gamble Co/the | 0% | — | Unchanged |
| 25 | BAB | Invesco Taxable Municipal Bo | 0% | — | Unchanged |
| 26 | AGG | Ishares Core U.s. Aggregate | 0% | — | Unchanged |
| 27 | BRK-B | Berkshire Hathaway Inc-cl B | 0% | — | Unchanged |
| 28 | IXUS | Ishares Core Intl Stock ETF | 0% | -3.86% | Trim |
| 29 | IGIB | Ishares 5-10y Inv Grade CORP | 0% | — | Unchanged |
| 30 | LQD | Ishr Ibx Usd Invgd Cb Etf-ui | 0% | — | Unchanged |
| 31 | LOW | Lowe's Cos INC | -0.1% | — | Unchanged |
| 32 | VRTX | Vertex Pharmaceuticals INC | -0.1% | — | Unchanged |
| 33 | MKL | Markel Group INC | -0.1% | — | Unchanged |
| 34 | OTIS | Otis Worldwide CORP | -0.1% | — | Unchanged |
| 35 | BN | Brookfield CORP | -0.1% | — | Unchanged |
| 36 | USIG | Ishares Broad Usd Investment | -0.2% | -3.66% | Trim |
| 37 | VTI | Vanguard Total Stock Mkt ETF | -0.2% | — | Unchanged |
| 38 | ABBV | Abbvie INC | -0.2% | — | Unchanged |
| 39 | IVV | Ishares Core S&p 500 ETF | -0.2% | +1.87% | Add |
| 40 | JPM | Jpmorgan Chase & Co | -0.2% | — | Unchanged |
| 41 | BKNG | Booking Holdings INC | -0.3% | — | Unchanged |
| 42 | BRK-A | Berkshire Hathaway Inc-cl A | -0.3% | — | Unchanged |
| 43 | VRSK | Verisk Analytics INC | -0.3% | — | Unchanged |
| 44 | AXP | American Express Co | -0.4% | — | Unchanged |
| 45 | V | Visa Inc-class A Shares | -0.5% | — | Unchanged |
| 46 | IBM | Intl Business Machines CORP | -0.5% | — | Unchanged |
| 47 | QCOM | Qualcomm INC | -0.5% | — | Unchanged |
| 48 | ORCL | Oracle CORP | -0.9% | — | Unchanged |
| 49 | IWR | Ishares Russell Mid-cap ETF | — | EXIT | Sold out |
| 50 | VLUE | Ishares Msci USA Value Facto | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-04-29 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-31 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-29 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-22 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-07 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-08 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-25 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-06 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-01-31 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-02 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-01 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-18 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-20 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-10-14 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-12 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-16 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-01 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-10-08 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-02 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-04-22 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-10 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-10 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-24 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-12 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-07 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-21 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-08-01 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-22 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-13 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-26 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-23 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-04-25 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-12 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-03 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-08 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-14 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-01-17 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-14 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-07-27 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-13 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-01-15 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-14 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-24 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-12 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-01-30 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-13 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-07-22 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-02 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-01-21 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-10-24 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-02 | 13F-HR | View on EDGAR |
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