Skip to main content
BFIX logo

BFIX · Build Bond Innovation ETF

Track BFIX — free
$25.00 -0.01 (-0.02%) At close · Aug 19

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 4
Total Value: $1,863,794
Total Shares: 74,314

Institutional Ownership Trend

18 quarters

Holder Concentration

Across 4 13F filers · Δ vs Mar 31, 2026
Top Holder
56.3%
Sep 2023 → Jun 2026 · range 22.6% – 56.3%
+29.3 pts
Top 5
100.0%
Sep 2023 → Jun 2026 · range 85.4% – 100.0%
+11.6 pts
Top 10
100.0%
Sep 2023 → Jun 2026 · range 100.0% – 100.0%
0.0 pts
HHI
4,791
Sep 2023 → Jun 2026 · range 1,768 – 4,791
Highly concentrated+2,997

Quarterly Activity

vs Mar 31, 2026
New
0
Increased
1
Decreased
1
Sold Out
5
Unchanged
2
Holder count: -5
Institutional value: -65.2%
Shares held: -64.8%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
No new positions this quarter.

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 4 of 4
Export CSV
Holder Value (USD) % of 13F Shares Open
Key facts CIK 1875710 CUSIP 12009B101 13F (30d) 4 filings 4 filers