257 essays 1,087 funds measured independent · not paid by any fund or issuer we cover

Fund · JPMorgan BetaBuilders U.S. Mid Cap Equity ETF · measured from SEC filings

BBMC holdings

BBMC reports 463 holdings and behaves like 358.2 equally weighted ones, computed from its SEC Form N-PORT filing for 2026-07-31. The fact sheet publishes the first number; this page computes the second, and traces it across 25 quarters of filings.

Measured concentration

as of 2026-07-31

Read this figure with the following in mind

3.4% of net assets is securities-lending cash collateral, excluded from the figure; counted as filed the fund would read 254.6

The figure below is what the filing says, published unchanged. What it may not do is sit beside a plain long-only fund and be read as the same quantity. How comparability is decided.

463 Positions reported
358.2 Effective holdings
1.3× Concentration multiple
6.66% Top ten weight

Computed by this site from the fund's SEC Form N-PORT filing; what the measure does not tell you · every fund in one table · hold it with other funds? X-ray the mix. Pricing: 100% at a quoted market price (level 1), 9 issuer countries.

What stands out

as of 2026-07-31

BBMC's largest investment is Sandisk Corp at 3.06% of net assets. Ciena Corp and Lumentum Holdings Inc follow; the three together are 5.83%. Ten companies are 6.66% of the fund; the other 453 share the rest. Among the 721 equity funds measured here, BBMC behaves like 358.2 holdings against a median of 42.4 — 8.4 times the median. Across 25 quarterly filings BBMC has become more concentrated: it behaved like 359.2 at 2020-04-30 and 272.2 at 2026-04-30. Between the 2026-01-31 and 2026-04-30 filings 0 positions were added and 8 dropped; 9.5% of the weight moved.

Each sentence is read from the fund's own SEC filing; the class median is computed across the comparable equity funds on this site. Nothing here is a view on the fund.

Every filing since 2020

25

Between 2020-04-30 and 2026-04-30, BBMC went from behaving like 359.2 equally weighted positions to 272.2 — 24% fewer, while its top ten went from 6.38% to 10.95% of net assets. Read across the funds on the concentration-over-time table.

PeriodHoldingsEffective Top 10Largest
2026-04-30 558 272.2 10.95% 3.06%
2026-01-31 566 387.2 7.27% 1.41%
2025-10-31 554 374.6 7.22% 0.94%
2025-07-31 560 412.6 6.14% 0.71%
2025-04-30 574 406.7 6.23% 1.25%
2025-01-31 582 430.9 5.94% 0.94%
2024-10-31 594 422.8 6.09% 1.13%
2024-07-31 599 464.1 5.01% 0.66%
Earlier filings (17 more, back to 2020-04-30)
PeriodHoldingsEffectiveTop 10Largest
2024-04-30 594 410.8 6.99% 1.25%
2024-01-31 598 456.4 5.58% 0.76%
2023-10-31 589 437.7 5.87% 1.04%
2023-07-31 598 456.1 5.51% 1.13%
2023-04-30 640 457.8 5.41% 0.89%
2023-01-31 645 487.4 4.65% 0.63%
2022-10-31 627 456 5.19% 0.72%
2022-07-31 634 437.9 5.64% 1.59%
2022-04-30 636 452.7 5.05% 0.66%
2022-01-31 642 476.6 4.47% 0.5%
2021-10-31 594 371.4 7.47% 1.07%
2021-07-31 599 400.2 6.4% 0.76%
2021-04-30 550 379.7 6.37% 0.74%
2021-01-31 553 370.6 6.97% 1.01%
2020-10-31 531 321.9 8.39% 1.23%
2020-07-31 535 347.9 7.65% 0.96%
2020-04-30 515 359.2 6.38% 0.76%

One row per filed reporting period, newest first, read from EDGAR. Quarterly because that is the public filing cadence. Rows marked * are published but held out of the comparison above; the methodology page says when and why.

As filed, collateral included

3.38% collateral

BBMC's filing lists 464 positions including 3.38% of net assets in securities-lending cash collateral. Counted as filed the fund reads 254.6 effective holdings with a top ten of 9.48%; on its own investments — the figure above — it reads 358.2 with a top ten of 6.66%. The collateral is matched by a liability and is not a holding the fund chose; since 2026-09-18 every figure on this site sets it aside (methodology). Both numbers are in the data.

Largest positions, as filed

as of 2026-04-30

The 15 largest of 463 positions in BBMC's Form N-PORT, weight as a share of net assets, securities-lending collateral excluded. Every position, every quarter: BBMC.csv.gz.

#PositionWeightCumulative
1Sandisk Corp.3.06%3.1%
2Ciena Corp.1.49%4.5%
3Lumentum Holdings, Inc.1.28%5.8%
4Coherent Corp.1.13%7.0%
5JPMorgan U.S. Government Money Market Fund0.96%7.9%
6Jabil, Inc.0.67%8.6%
7Tapestry, Inc.0.60%9.2%
8Casey's General Stores, Inc.0.60%9.8%
9Qnity Electronics, Inc.0.59%10.4%
10TechnipFMC plc0.58%11.0%
11Natera, Inc.0.56%11.5%
12Revolution Medicines, Inc.0.54%12.0%
13Curtiss-Wright Corp.0.53%12.6%
14XPO, Inc.0.52%13.1%
15Fabrinet0.50%13.6%

By country of issuer

as of 2026-04-30

Share of BBMC's own investments by the issuer country the filer reported (incorporation, not revenue). Each country links to every fund that holds it.

CountryShare
United States 94.73%
Bermuda° 1.86%
Ireland° 0.97%
United Kingdom 0.82%
Cayman Islands° 0.50%
Switzerland 0.44%
Netherlands° 0.27%
Puerto Rico° 0.19%

Returns the fund reported

2020-02 – 2026-04

Monthly total returns from Item B.5 of BBMC's own filings, 75 months on record. Not computed here and not from a price feed.

35.6%Last twelve months filed
151%Whole series, compounded
15.6%Best month
-9.5%Worst month

Cross-checked against a series computed separately from prices: median difference 0.10 percentage points over 72 months, which is roughly the distributions. Every month with the filing it came from: BBMC.json · all funds.

Who borrows BBMC's shares

2026-07-31

The fund lends its holdings, and Item B.4.a of the filing names every firm holding them. At 2026-07-31, $67m was out to 14 borrowers. The largest, BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED, held 31.9% of it.

BorrowerOn loanShare of the loan
BNP PARIBAS PRIME BROKERAGE INTERNATIONAL LIMITED $21m 31.9%
National Financial Services LLC $13m 19.1%
GOLDMAN SACHS & CO. $10m 15.4%
BARCLAYS BANK PLC $9m 12.8%
MORGAN STANLEY & CO LLC $3m 4.4%

The filing reports no cash collateral position against this loan. Collateral taken in a form the fund does not hold as a position does not appear in N-PORT, so this is silence rather than absence. What the collateral figure can and cannot show. Every quarter BBMC has filed, with each borrower: BBMC.json · all funds.

Since the previous filing

2026-01-31 → 2026-04-30

566 positions became 558: 0 added (0.0% of the fund at the later date), 8 dropped (1.6% at the earlier date). Half the sum of all weight changes, a turnover proxy: 9.5%. Positions are matched on identifiers, so a security whose identifier changed shows as one drop and one add. Every filing of BBMC compared this way, as a feed: changes.xml · all funds: filings received.

Largest increases2026-01-312026-04-30Largest decreases2026-01-312026-04-30
Sandisk Corp.1.41%3.06% AST SpaceMobile, Inc.0.56%0.35%
Ciena Corp.0.75%1.49% Kratos Defense & Security Solutions, Inc.0.36%0.23%
Lumentum Holdings, Inc.0.57%1.28% EPAM Systems, Inc.0.24%0.13%
Coherent Corp.0.69%1.13% Reddit, Inc.0.48%0.37%
Revolution Medicines, Inc.0.31%0.54% Williams-Sonoma, Inc.0.53%0.43%
Jabil, Inc.0.50%0.67% Builders FirstSource, Inc.0.27%0.18%

Gone: Exact Sciences Corp. (0.40%), Comerica, Inc. (0.24%), Dayforce, Inc. (0.23%), Confluent, Inc. (0.18%), Avidity Biosciences, Inc. (0.18%), Cadence Bank (0.16%).

Asset categories and pricing

as of 2026-07-31

95.89% equity, 4.11% short-term investment as filed; 100.0% carried at a quoted market price (fair-value level 1). Categories and levels are the filer's; what a low level-1 share does and does not mean is in the measure's page.

Derivative exposure and counterparties

as of 2026-04-30

A position count cannot describe a fund that uses derivatives, because a swap is filed at its unrealised gain, not its exposure. These are the notionals the fund itself reported, against net assets of $2.03B. Notional of an interest-rate or currency swap is not equity exposure.

98.92%Stocks held directly
0%Swap notional (0)
1.04%Futures notional (1)
100%Sum, % of net assets

Full detail for every fund that files derivatives: leverage.json (CC BY 4.0).

Neighbours by effective holdings, equity funds

10

Every measured equity fund lined up by how many holdings it behaves like; these sit either side of BBMC (358.2). Same filings, same arithmetic. Position in this list says nothing about which fund is better.

FundReportsBehaves likeTop tenAs of
BKMC BNY Mellon US Mid Cap Core Equity ETF 403 325.1 6.4% 2026-07-31
EZM WisdomTree U.S. MidCap Fund 507 330.3 7.77% 2026-06-30
ESML iShares ESG Aware MSCI USA Small-Cap ETF 899 349.4 7.64% 2026-05-31
DFSV Dimensional US Small Cap Value ETF 995 354.9 6.89% 2026-07-31
IJR iShares Core S&P Small-Cap ETF 655 356.1 7.46% 2026-06-30
DFSI Dimensional International Sustainability Core 1 ETF 2,809 361.8 9.77% 2026-07-31
FSMD Fidelity Small-Mid Multifactor ETF 588 371.9 8.16% 2026-07-31
JHSC John Hancock Multifactor Small Cap ETF 490 377.9 5.38% 2026-06-30
DFAI Dimensional International Core Equity Market ETF 3,781 389.8 9.29% 2026-07-31
AVDV Avantis International Small Cap Value ETF 1,758 392.8 8.14% 2026-05-31

Essays that examine BBMC

0

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