Auto-Owners Insurance 13F: Exits Proto Labs (PRLB) Stake

In a filing on October 15, 2026, Auto-Owners Insurance revealed it sold out of its entire position in Proto Labs, Inc. (NYSE: PRLB), which amounted to 4,500 shares. This exit left the firm with zero shares after a complete sell-off.

What Changed in Auto-Owners Insurance's Position

The firm closed its position in Proto Labs, which represents a 100% decrease in its stake. With the shares sold, the reported value of this exit was approximately $385,000.

Other Institutional Activity in Proto Labs

Several other funds made notable moves in Proto Labs recently. Blackrock Inc. grew its holdings by 218,459 shares, ending with 3,896,222 shares worth about $333.7 million. Vanguard Portfolio Management LLC added 61,234 shares, bringing its total to 1,599,765 shares valued at around $137.0 million. In contrast, Disciplined Growth Investors, Inc. reduced its stake by 116,878 shares, resulting in 2,380,514 shares valued at approximately $203.9 million. Dimensional Fund Advisors LP trimmed its position by 120,117 shares, ending with 1,152,305 shares worth about $98.7 million.

Proto Labs, Inc. Stock Down 2.3%

Proto Labs, Inc. is currently trading around $85.44 as of October 16, 2026. This price is 10.5% below the average analyst price target of $95.50. It is also positioned below its 50-day moving average, which stands at $86.96, reflecting a 1.7% deficit. However, it remains above its 52-week low of $45.10, being approximately 89.4% above that level.

Recent Earnings

Proto Labs reported a trailing twelve-month revenue of $560.5 million, showing a year-over-year growth of 10.6%. The company's latest earnings report is expected on October 29, 2026.

Insider Buying and Selling at Proto Labs, Inc.

In recent transactions, Chief Operating Officer Michael R. Kenison sold several shares earlier in 2026, including 23,463 shares on May 12, which was valued at approximately $1.6 million.

Analysts Set New Price Targets

On July 6, 2026, Benchmark maintained a "Buy" rating on Proto Labs with a price target of $91.00, up from a previous target of $70.00. Needham upgraded its rating to "Buy" on August 3, 2026, setting a target of $87.00. The mean price target from analysts stands at $95.50, suggesting potential upside for current holders.

About Proto Labs

Proto Labs, Inc. is a digital manufacturer based in Maple Plain, Minnesota. Founded in 1999, it specializes in producing custom parts through methods like 3D printing and CNC machining for engineers and developers. This focus on rapid manufacturing positions the company well in the growing industrial sector, particularly in the context of evolving supply chain needs.

Bottom Line

Watch for Proto Labs' upcoming earnings report on October 29, 2026, which could provide further insights into its financial health after this significant change in institutional ownership. The filing reflects the holdings as of the reporting period and may not represent Auto-Owners Insurance's current position. Keep in mind that 13F filings are backward-looking: they show holdings as of the end of the reporting quarter and may not represent the fund's current position.