William Blair & Company’s Oshkosh OSK Stock Holding History

William Blair & Company’s Portfolio OSK Stock Details OSK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$1.32M	Buy	8,960 +3	+0%	+$468	﹤0.01%	852
2025 Q4	$1.13M	Buy	8,957 +292	+3%	+$37.6K	﹤0.01%	906
2025 Q3	$1.12M	Buy	8,665 +691	+9%	+$91.7K	﹤0.01%	887
2025 Q2	$905K	Hold	7,974	–	–	﹤0.01%	924
2025 Q1	$750K	Sell	7,974 -3,980	-33%	-$398K	﹤0.01%	963
2024 Q4	$1.14M	Sell	11,954 -666	-5%	-$69.7K	﹤0.01%	863
2024 Q3	$1.26M	Sell	12,620 -4,102	-25%	-$427K	﹤0.01%	836
2024 Q2	$1.81M	Sell	16,722 -241	-1%	-$27.9K	0.01%	711
2024 Q1	$2.12M	Buy	16,963 +6,815	+67%	+$759K	0.01%	663
2023 Q4	$1.1M	Sell	10,148 -139	-1%	-$13.4K	﹤0.01%	825
2023 Q3	$982K	Sell	10,287 -125	-1%	-$12.1K	﹤0.01%	843
2023 Q2	$902K	Buy	10,412 +602	+6%	+$47.4K	﹤0.01%	869
2023 Q1	$816K	Sell	9,810 -911	-8%	-$82.7K	﹤0.01%	892
2022 Q4	$945K	Buy	10,721 +2,966	+38%	+$255K	﹤0.01%	839
2022 Q3	$545K	Buy	7,755 +4	+0.1%	+$325	﹤0.01%	1013
2022 Q2	$637K	Sell	7,751 -54	-0.7%	-$4.96K	﹤0.01%	989
2022 Q1	$786K	Sell	7,805 -95	-1%	-$10.7K	﹤0.01%	1005
2021 Q4	$890K	Sell	7,900 -12	-0.2%	-$1.31K	﹤0.01%	1002
2021 Q3	$810K	Sell	7,912 -63	-0.8%	-$7.24K	﹤0.01%	1000
2021 Q2	$994K	Buy	7,975 +24	+0.3%	+$3.03K	﹤0.01%	923
2021 Q1	$943K	Sell	7,951 -155	-2%	-$16.1K	﹤0.01%	920
2020 Q4	$698K	Buy	8,106 +677	+9%	+$53.9K	﹤0.01%	983
2020 Q3	$546K	Buy	7,429 +673	+10%	+$51.8K	﹤0.01%	949
2020 Q2	$484K	Sell	6,756 -1,276	-16%	-$87.1K	﹤0.01%	949
2020 Q1	$517K	Buy	8,032 +4,189	+109%	+$328K	﹤0.01%	858
2019 Q4	$364K	Sell	3,843 -4,175	-52%	-$360K	﹤0.01%	1108
2019 Q3	$608K	Hold	8,018	–	–	﹤0.01%	889
2019 Q2	$669K	Buy	8,018 +40	+0.5%	+$3.15K	﹤0.01%	884
2019 Q1	$599K	Hold	7,978	–	–	﹤0.01%	908
2018 Q4	$489K	Hold	7,978	–	–	﹤0.01%	914
2018 Q3	$568K	Hold	7,978	–	–	﹤0.01%	922
2018 Q2	$561K	Buy	7,978 +156	+2%	+$11.7K	﹤0.01%	914
2018 Q1	$604K	Sell	7,822 -24	-0.3%	-$2.04K	﹤0.01%	863
2017 Q4	$713K	Sell	7,846 -49	-0.6%	-$4.29K	﹤0.01%	851
2017 Q3	$652K	Hold	7,895	–	–	﹤0.01%	844
2017 Q2	$544K	Buy	7,895 +3,000	+61%	+$202K	﹤0.01%	956
2017 Q1	$333K	Buy	4,895 +274	+6%	+$18.8K	﹤0.01%	1028
2016 Q4	$299K	Buy	4,621 +397	+9%	+$24.6K	﹤0.01%	1006
2016 Q3	$237K	Buy	+4,224	New	+$222K	﹤0.01%	1104
2015 Q2	–	Sell	-4,224	Closed	-$206K	–	2228
2015 Q1	$206K	Buy	+4,224	New	+$193K	﹤0.01%	2014
2014 Q4	–	Sell	-22,843	Closed	-$1.01M	–	2133
2014 Q3	$1.01M	Buy	+22,843	New	+$1.14M	﹤0.01%	1468

Other funds holding OSK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Aristotle Capital Management Los Angeles, California $47.8B AUM 13.38% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Greenhaven Associates Purchase, New York $8.66B AUM 17.37% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

LSV Asset Management Chicago, Illinois $46.4B AUM 27.74% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

William Blair & Company's OSK Position: Q1 2026 in Review

William Blair & Company increased its Oshkosh (OSK) stake by 0.03% in Q1 2026, buying an estimated $468 and bringing the position to 8,960 shares worth $1.32M. The position accounts for ﹤0.01% of the portfolio, ranked #852.

William Blair & Company first reported a position in OSK in Q3 2014 and has held it in 41 quarters since. The position peaked at $2.12M in Q1 2024. 585 funds tracked by Wall St. Rank hold OSK as of Q1 2026.

William Blair & Company held 8,960 shares of Oshkosh worth $1.32M as of Q1 2026.
William Blair & Company bought 3 Oshkosh shares in Q1 2026, an estimated $468.
Oshkosh made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #852 holding.
William Blair & Company first reported a position in Oshkosh in Q3 2014 and has held it in 41 quarters since.
William Blair & Company's Oshkosh position peaked at $2.12M in Q1 2024.
585 funds tracked by Wall St. Rank held Oshkosh as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.