White Mountains delivered an exceptional Q4 2025, highlighted by a significant increase in net income and book value per share, largely driven by the sale of Bamboo and solid underwriting and investment results across core operations.

White Mountains Insurance Group, Ltd. reported a slight increase in book value per share to $1,752 as of March 31, 2025, driven by solid operating results and good investment returns, partially offset by a decline in MediaAlpha's share price. The company's total revenues for the quarter were $577.8 million, with a net income of $33.9 million.

White Mountains reported a decrease in book value per share and adjusted book value per share in Q4 2024, primarily due to mark-to-market declines in its investment portfolio, including MediaAlpha. However, the company saw growth in gross written premiums at Ark and Bamboo, and Kudu's portfolio surpassed $1 billion. The company had undeployed capital of approximately $700 million.

White Mountains reported a strong third quarter, with adjusted book value per share up 6% and 11% year-to-date. Ark produced a 79% combined ratio, and Bamboo doubled managed premiums. MediaAlpha's share price increased, producing an unrealized gain.

White Mountains reported a decrease in book value per share and adjusted book value per share for Q2 2024, primarily due to its investment in MediaAlpha. Excluding MediaAlpha, the company experienced growth driven by solid results in operating companies and good investment returns. Ark produced an 89% combined ratio with gross written premiums increasing by 15% year-over-year. BAM also saw growth, with total gross written premiums and member surplus contributions up 7% year-over-year.

White Mountains reported a strong first quarter in 2024, with a 6% increase in adjusted book value per share. The company benefited from unrealized gains in MediaAlpha and solid performance across its operating segments, including Ark, BAM, Kudu, and Bamboo.

White Mountains reported a strong fourth quarter, with book value per share and adjusted book value per share both increasing by 7%. The company saw good results from its operating companies and excellent returns in its investment portfolio. The value of their MediaAlpha position grew significantly. Undeployed capital stands at roughly $500 million.

White Mountains reported a 1% increase in adjusted book value per share (ABVPS) for the third quarter of 2023. Ark's combined ratio was 81% while growing premiums 17% year over year. WM Outrigger Re delivered a 44% combined ratio. The fair value of Kudu’s portfolio of existing participation contracts grew 2%.

White Mountains reported a 1% increase in adjusted book value per share and a comprehensive income of $21 million for Q2 2023. The company's performance was driven by BAM, Ark, and Kudu, while MediaAlpha's share price decline negatively impacted results. Undeployed capital stands at roughly $680 million.

White Mountains reported a strong first quarter with a 5% increase in both book value per share and adjusted book value per share. The company saw positive returns from its investment portfolio and solid results from its operating companies, including BAM, Ark, Kudu, and MediaAlpha.

White Mountains reported a solid fourth quarter, with a 2% increase in adjusted book value per share (ABVPS) and a 26% increase for the full year. The company saw good results from its operating companies, positive returns in its investment portfolio, and the successful launch of Outrigger Re.

White Mountains reported a strong third quarter, with a significant increase in adjusted book value per share (ABVPS) driven by the gain from the sale of NSM. The company also saw good operating results across its businesses, including record premiums at BAM and a strong combined ratio at Ark. Share repurchases continued, and undeployed capital remained substantial.

White Mountains Insurance Group reported a decrease in book value per share and adjusted book value per share for the second quarter of 2022, primarily due to mark-to-market losses in fixed income portfolios and a decline in MediaAlpha's share price. However, the company's operating businesses, including BAM and Ark, performed well. The sale of NSM closed on August 1, adding roughly $300 to ABVPS, and the company repurchased $63 million of shares during the quarter.

White Mountains reported a positive first quarter, with adjusted book value per share increasing by 1%. The company benefited from strong performance in its operating companies and equity portfolio, which offset the negative impact of rising interest rates on its fixed income portfolio. Key contributors included BAM, Ark, NSM, and Kudu.

White Mountains reported a 1% increase in both book value per share and adjusted book value per share for Q4 2021. Strong results from operating companies were partially offset by a decline in the MediaAlpha investment. The company completed share repurchases of $13 million during the quarter and finished the year with roughly $400 million of undeployed capital.

White Mountains Insurance Group reported a decrease in book value per share of 9% to $1,162 and adjusted book value per share of 9% to $1,176 as of September 30, 2021. The results were driven by net realized and unrealized investment losses from MediaAlpha. Excluding MediaAlpha, the investment portfolio returned 1.4% in the quarter.

White Mountains Insurance Group reported a strong second quarter with a 4% increase in adjusted book value per share. Results were driven by solid performance across operating companies and an increase in MediaAlpha's share price. The company had $300 million in undeployed capital and expects this to increase in the third quarter.

White Mountains Insurance Group reported a decrease in adjusted book value per share of 2% in Q1 2021, impacted by a mark-to-market decline in MediaAlpha and a loss from NSM's sale of Fresh Insurance. However, underlying operating results were sound, with BAM achieving its strongest first quarter and Ark's gross written premiums more than doubling year over year.

White Mountains reported a strong fourth quarter, highlighted by the successful MediaAlpha IPO and solid performance across its core businesses. Book value per share and adjusted book value per share both increased by 15% in the quarter. The company's investment in Ark closed on January 1, 2021, and the investment portfolio (excluding MediaAlpha) returned 1.7% in the quarter.

White Mountains reported strong Q3 2020 results, with significant increases in book value per share and adjusted book value per share. The investment portfolio performed well, and the company benefited from the increased fair value of its investment in MediaAlpha. The company also announced a transaction with Ark, expected to close in January 2021, and celebrated the successful IPO of MediaAlpha.

White Mountains reported a good second quarter with a 4% increase in adjusted book value per share to $1,022, primarily driven by a 6.5% return on the investment portfolio. Several business segments, including BAM, NSM, Kudu, and MediaAlpha, showed strong performance.

White Mountains reported a decrease in book value per share and adjusted book value per share due to a negative return on the investment portfolio, influenced by the COVID-19 pandemic. However, BAM had a good quarter due to secondary market activity, NSM grew its top line, and MediaAlpha had a record quarter.

White Mountains reported a solid fourth quarter, with a 4% increase in the investment portfolio. BAM produced $23 million in premiums and member surplus contributions. NSM showed solid top line growth, and Kudu continued to grow revenues and profits, closing two new investments.