Mariner
BLDR icon

Mariner’s Builders FirstSource BLDR Stock Holding History

Mariner’s Portfolio BLDR Stock Details BLDR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$658K Sell
7,988
-3,433
-30% -$367K ﹤0.01% 2277
2025
Q4 		$1.18M Sell
11,421
-29,077
-72% -$3.27M ﹤0.01% 1837
2025
Q3 		$4.91M Sell
40,498
-19,197
-32% -$2.55M 0.01% 936
2025
Q2 		$6.97M Sell
59,695
-271
-0.5% -$31.3K 0.01% 737
2025
Q1 		$7.49M Buy
59,966
+2,350
+4% +$342K 0.01% 657
2024
Q4 		$8.24M Buy
57,616
+3,875
+7% +$686K 0.01% 611
2024
Q3 		$10.4M Buy
53,741
+3,500
+7% +$580K 0.02% 523
2024
Q2 		$6.95M Buy
50,241
+15,931
+46% +$2.7M 0.01% 619
2024
Q1 		$7.16M Buy
34,310
+12,164
+55% +$2.25M 0.01% 610
2023
Q4 		$3.7M Sell
22,146
-42,040
-65% -$5.59M 0.01% 798
2023
Q3 		$5.43M Buy
64,186
+50,365
+364% +$6.95M 0.01% 617
2023
Q2 		$1.88M Buy
13,821
+66
+0.5% +$7.34K 0.01% 1004
2023
Q1 		$1.22M Buy
13,755
+3,208
+30% +$254K ﹤0.01% 1179
2022
Q4 		$685K Buy
10,547
+5,699
+118% +$356K ﹤0.01% 1452
2022
Q3 		$286K Buy
+4,848
New +$303K ﹤0.01% 1804

Other funds holding BLDR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Sands Capital Management
Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Mariner's BLDR Position: Q1 2026 in Review

Mariner reduced its Builders FirstSource (BLDR) stake by 30% in Q1 2026, selling an estimated $367K and leaving 7,988 shares worth $658K. The position accounts for ﹤0.01% of the portfolio, ranked #2277.

Mariner first reported a position in BLDR in Q3 2022 and has held it in 15 quarters since. The position peaked at $10.4M in Q3 2024. 719 funds tracked by Wall St. Rank hold BLDR as of Q1 2026.

  • Mariner held 7,988 shares of Builders FirstSource worth $658K as of Q1 2026.
  • Mariner sold 3,433 Builders FirstSource shares in Q1 2026, an estimated $367K.
  • Builders FirstSource made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #2277 holding.
  • Mariner first reported a position in Builders FirstSource in Q3 2022 and has held it in 15 quarters since.
  • Mariner's Builders FirstSource position peaked at $10.4M in Q3 2024.
  • 719 funds tracked by Wall St. Rank held Builders FirstSource as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.