LORD ABBETT DEVELOPING GROWTH FUND INC

LORD ABBETT DEVELOPING GROWTH FUND, INC. · 11 share classes

Actively managed U.S. equity fund
One fund, 11 share classes:LAGWXLADCXLADPXLADYXLADFXLADQXLADRXLADSXLADTXLADVXLOGWX
$2.22B NAV
94 positions · as of 2026-04-30 · filed 2026-06-29

Fund classification

Classified from what the fund holds · as of 2026 Q2

LORD ABBETT DEVELOPING GROWTH FUND INC is an actively managed U.S. equity fund.

Asset class
Equity
Region
United States
Management
Actively managed
Fund type
Open-end fund

Fund profile

As filed in the prospectus · 2025 Q4

The Funds investment objective is long-term growth of capital through a diversified and actively managed portfolio consisting of developing growth companies, many of which are traded over the counter.

Strategy · summarised

The fund seeks long-term capital growth by actively selecting equity securities of small companies in their developing growth phase, defined as the period of rapid expansion after start-up when growth typically exceeds that of mature companies. The portfolio management team identifies companies it believes are strongly positioned within this phase, with at least 65% of net assets in small-cap equities as defined by the Russell 2000 Index range, and may allocate up to 20% to foreign securities including emerging markets. Because security selection depends on the portfolio team's assessment of individual companies' growth prospects and market positioning, fund performance will diverge from any index. The fund may engage in active and frequent trading and may use defensive strategies that could cause it to miss investment opportunities.

Expenses
0.60% 1.69%across 11 share classes
Share classExpense ratio
LAGWX0.94%
LADCX1.69%
LADPX1.14%
LADYX0.69%
LADFX0.79%
LADQX1.29%
LADRX1.19%
LADSX0.94%
LADTX0.69%
LADVX0.60%
LOGWX0.60%

Portfolio turnover 112.00% · as of 2025 Q4

Allocation

Asset groups · long / short shown separately, never netted · 2026 Q2

103.01%
of net assets
Stocks99.57%
Cash & short-term3.44%

Sector allocation

The same holdings as Allocation above, grouped by market sector instead of asset type · as of 2026 Q2

100%
of net assets
Industrials34.0%
Information Technology27.5%
Health Care19.7%
International6.0%
7 smaller12.8%

Government, Securitized and Cash are non-corporate buckets; International is foreign holdings we don’t sector-classify, and Other is the residual (held funds, unresolved names).

Latest quarter

What changed since the fund's previous filing

2026Q2 vs 2026Q1: 33 new26 exited

Largest new: PL, DOCN, TTMI, CAVA, NAVN, COCO, WULF, LGN

Largest exited: Fixed Income Clearing Corp, MIR, IRTC, RDDT, WGS, Terns Pharmaceuticals Inc, PLNT, XMTR

Return profile

Chart:

Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026

Share class1-year3-year5-yearVolWorst fall
+56.46%+67.44%+3.64%20.06%-23.32%
+55.33%+63.59%-0.23%19.95%-23.53%
+56.19%+66.46%+2.60%20.02%-23.37%
+56.85%+68.68%+4.94%20.04%-23.27%
+56.73%+68.24%+4.38%20.09%-23.30%
+55.94%+65.63%+1.78%20.02%-23.42%
+56.12%+66.16%+2.35%20.04%-23.39%
+56.54%+67.51%+3.69%20.04%-23.32%
+56.84%+68.69%+4.94%20.06%-23.27%
+56.96%+69.11%+5.42%20.06%-23.24%
+57.01%+69.20%+5.45%20.04%-23.24%

These classes hold the same portfolio, so the 5.69pp spread over 5 years is the cost difference between them — roughly 1.14pp a year — not a difference in what they own.

Cumulative return· May 2023 – Apr 2026

Holdings

By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page

Issuer%NAVValue
Comfort Systems USA IncFIX3.60%$79.82M
Bloom Energy CorpBE3.23%$71.83M
Sterling Infrastructure IncSTRL2.77%$61.61M
Fidelity Investments2.62%$58.18M
SiTime CorpSITM2.53%$56.12M
Guardant Health IncGH2.35%$52.21M
MACOM Technology Solutions Holdings IncMTSI2.33%$51.71M
Fabrinet2.23%$49.50M
Carpenter Technology CorpCRS2.09%$46.36M
Nova Ltd1.99%$44.26M
Showing 10 of 94Sign in to see more

Reported price is the fund's own reported value divided by its own reported shares at 2026-04-30 — not a live quote, and not what the fund paid.

Top 10 positions are 25.74% of net assets, top 25 49.03%, across 94 issuers.

See more of this fund's book

More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.

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