CORBYN INVESTMENT MANAGEMENT INC/MD
SEC Form 13F institutional filer · CIK 0000919538
13F-HR · 26 reported holdings · 2026-03-31
Reported long-US-equity value
$0.13B
Top-10 concentration
73.2%
CORBYN INVESTMENT MANAGEMENT INC/MD — $129M AUM allocation strategy
CORBYN INVESTMENT MANAGEMENT INC/MD files SEC Form 13F and reports $129M of long US equity value across 26 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 45.9%, followed by Financials 12.7% and Communication Services 12.0%.
The top 10 holdings account for 73% of reported value — a conviction-weighted book concentrated in its best ideas. The sector and industry splits below are of the same reported value. Track quarter-over-quarter adds, trims, new positions and exits below — sourced from SEC 13F filings, public domain.
CORBYN INVESTMENT MANAGEMENT INC/MD — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$129M
total across 26 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
73% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$EME −3.97K sh · +$929K−$GOOGL −1.27K sh · −$1.43M−$JCI −1.07K sh · +$902K
Exited to nil (held last quarter, gone now)
$KVUE ($3.2M last qtr)$AAPL ($211K last qtr)$JPM ($211K last qtr)
Sector allocation (share of reported value)
each slice is a share of the reported long-US-equity value — smaller sectors and the rest of the book roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Industry allocation (share of reported value)
- Construction & Engineering15.2%—
- Environmental & Facilities Services14.7%—
- Property & Casualty Insurance9.9%—
- Building Products9.4%—
- Interactive Media & Services8.5%—
- Health Care Equipment6.1%—
- Oil & Gas Exploration & Production4.6%—
- Semiconductor Materials & Equipment3.8%—
- Other holdings28.0%—
the finer GICS cut of the same book — same denominator — smaller industries roll into “Other holdings”
Qtr shift = share-point change vs the prior quarter's filing — first period tracked for this filer; the column fills in with the next quarterly refresh.
Top S&P 500 holdings
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $EME | EMCOR Group Inc | 26.5K | $19.6M | -3.97K | 15.2% |
| $RSG | Republic Services Inc | 86.1K | $18.9M | -179 | 14.6% |
| $JCI | Johnson Controls International plc | 92K | $12M | -1.07K | 9.4% |
| $GOOGL | Alphabet Inc | 38.2K | $11M | -1.27K | 8.5% |
| $WRB | W.R. Berkley Corporation | 128K | $8.49M | -321 | 6.6% |
| $EOG | EOG Resources Inc | 41.2K | $5.96M | -176 | 4.6% |
| $Q | Qnity Electronics Inc | 41.6K | $4.8M | -155 | 3.7% |
| $NEE | NextEra Energy Inc | 49.6K | $4.6M | -356 | 3.6% |
| $FLEX | Flex Ltd | 70K | $4.58M | -241 | 3.6% |
| $TMUS | T-Mobile US Inc | 20.9K | $4.39M | -68 | 3.4% |
…and 16 more holdings in the full 13F filing (top positions only shown).
SEC Form 13F data sets · public domain · 45-day filing lag · >$100M AUM managers · as reported
← All 13F filers·← QuantOrb.pro
How to read Δ QoQ — the five insight categories, and the caveats
The categories. Analysts, quants and retail traders look past total portfolio value to isolate actionable signals. Five categories matter.
Conviction & concentration shifts
New positions vs complete exits — a brand-new stock signals high conviction; a full liquidation suggests a broken thesis or tax-loss harvesting. Aggressive sizing — look at share count, not dollars: a 20% share increase during a drawdown is strong dip-buying. Concentration — a narrowing top-5/10 means conviction; spreading capital across more names means hedging.
Sector & macro allocation rotations
Aggregating Δ QoQ moves across sectors shows where smart money is leaning in or sneaking out — rotating out of growth into defensives or energy, for example. The fund's total long equity exposure quarter-over-quarter is a proxy for overall institutional risk appetite.
Crowding & smart-money consensus
When several managers initiate or expand the same stock in the same quarter, that is institutional consensus. Contrarian reads: top pickers buying hard into a beaten-down name the market is selling.
Derivative & option overlays
Reported call/put changes indicate whether managers are adding downside hedges or leveraging upside exposure. Note: a long increase may be half of a market-neutral pair trade.
Who reads this
| Retail "cloners" | High-conviction ideas to replicate ~45 days after quarter-end. |
| Corporate IR | Which funds bought or dumped the stock, before the next call. |
| Quant / algo traders | Cross-sectional factor inputs: flow, momentum, ownership. |
Four caveats before you trade on it
- 45-day lag — holdings are quarter-end; positions may already be closed.
- Long-only — 13Fs miss shorts, pair trades and cash.
- No non-US / fixed income — the picture is US equities plus options.
- Corporate actions — splits and spinoffs distort raw share deltas.
Newsletter signup
Free subscription. Daily trading day morning dispatch. No spam.