Kinsale Capital Group stock falls 1.78 percent as shares lag

Kinsale Capital Group stock (ISIN US49704K1025) closed at USD 351.83 on the NYSE on September 22, 2026, down 1.78 percent from the previous close. The move gives investors a dated market reference as the specialty insurer trades below its recent level.

Monthly decline reaches 9.44 percent

According to Zacks on September 22, 2026, the shares had declined 9.44 percent over the preceding month. That performance compared with a 1.11 percent loss for the Finance sector and a 1.27 percent gain for the S&P 500 over the same period.

The comparison is material because Kinsale operates in specialty property and casualty insurance, where valuation and underwriting expectations can produce a different trading pattern from the broader market. The one-month gap was 10.55 percentage points versus the Finance sector and 10.71 percentage points versus the S&P 500.

Specialty insurance remains central

Kinsale focuses on excess and surplus lines within US property and casualty insurance, according to Simply Wall St. The same September 22, 2026 overview described customer float as invested mainly in bonds.

That operating profile links the company to both underwriting results and investment income. The published market-capitalization figure in the overview was USD 8.2 billion on September 22, 2026, placing the stock in the mid-cap insurance range by that measure.

Stock closes at USD 351.83

Kinsale Capital Group stock closed at USD 351.83 on the NYSE on September 22, 2026. The daily change was minus 1.78 percent, while the one-month comparison showed a minus 9.44 percent return through the same dated market update.

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