LONGFELLOW INVESTMENT MANAGEMENT CO LLC
SEC Form 13F institutional filer · CIK 0001167487
13F-HR · 120 reported holdings · 2026-03-31
Reported long-US-equity value
$0.24B
Top-10 concentration
53.2%
LONGFELLOW INVESTMENT MANAGEMENT CO LLC — $242M AUM allocation strategy
LONGFELLOW INVESTMENT MANAGEMENT CO LLC files SEC Form 13F and reports $242M of long US equity value across 120 reported holdings for 2026-03-31.
Its largest sector bet is Communication Services 15.5%, followed by Energy 13.7% and Financials 9.0%.
The top 10 holdings account for 53% 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.
LONGFELLOW INVESTMENT MANAGEMENT CO LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$242M
total across 120 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
53% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$KHC +344K sh · +$7.69M+$CMCSA +279K sh · +$7.7M+$BX +101K sh · +$11.3M
Biggest trims (shares)
−$MPC −187K sh · −$7.84M−$BMY −48.7K sh · −$1.95M−$KMI −27.8K sh · −$635K
Exited to nil (held last quarter, gone now)
$TGT ($1.11M last qtr)$EQIX ($859K last qtr)$GLW ($736K last qtr)$SLB ($508K last qtr)$HPQ ($504K 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)
- Oil & Gas Refining & Marketing13.7%—
- Asset Management & Custody Banks7.8%—
- Cable & Satellite6.6%—
- Integrated Telecommunication Services6.5%—
- Pharmaceuticals6.0%—
- Industrial Gases4.2%—
- Packaged Foods & Meats3.5%—
- Movies & Entertainment2.5%—
- Other holdings49.2%—
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 |
|---|---|---|---|---|---|
| $MPC | Marathon Petroleum Corporation | 579K | $33.1M | -187K | 13.7% |
| $BX | Blackstone Inc | 430K | $18.8M | +101K | 7.8% |
| $CMCSA | Comcast Corporation | 552K | $15.8M | +279K | 6.6% |
| $VZ | Verizon Communications Inc | 313K | $15.7M | +91.6K | 6.5% |
| $APD | Air Products and Chemicals Inc | 35.4K | $10.3M | +26K | 4.3% |
| $PFE | Pfizer Inc | 301K | $8.46M | +0 | 3.5% |
| $KHC | The Kraft Heinz Company | 373K | $8.39M | +344K | 3.5% |
| $BMY | Bristol-Myers Squibb Company | 100K | $6.08M | -48.7K | 2.5% |
| $DIS | Walt Disney Company | 62.1K | $5.99M | +37.1K | 2.5% |
| $QCOM | QUALCOMM Incorporated | 46.3K | $5.96M | +38.2K | 2.5% |
…and 110 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.
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