MARATHON CAPITAL MANAGEMENT
SEC Form 13F institutional filer · CIK 0001213206
13F-HR · 94 reported holdings · 2026-03-31
Reported long-US-equity value
$0.28B
Top-10 concentration
54.5%
MARATHON CAPITAL MANAGEMENT — $278M AUM allocation strategy
MARATHON CAPITAL MANAGEMENT files SEC Form 13F and reports $278M of long US equity value across 94 reported holdings for 2026-03-31.
Its largest sector bet is Financials 31.9%, followed by Information Technology 18.1% and Energy 7.1%.
The top 10 holdings account for 54% 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.
MARATHON CAPITAL MANAGEMENT — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$278M
total across 94 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
54% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$FIS +67K sh · +$1.41M+$AMZN +25.5K sh · +$4.62M+$WY +5.49K sh · +$171K
Biggest trims (shares)
−$GLW −80.2K sh · −$1.93M−$FANG −14.7K sh · +$61.9K−$TROW −14.6K sh · −$9.33M
Exited to nil (held last quarter, gone now)
$ULTA ($231K last qtr)$IVZ ($223K last qtr)$AXP ($222K last qtr)$AMP ($213K last qtr)$V ($205K 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)
- Asset Management & Custody Banks20.7%—
- Electronic Components5.1%—
- Technology Hardware, Storage & Peripherals4.4%—
- Interactive Media & Services4.4%—
- Broadline Retail4.1%—
- Pharmaceuticals3.8%—
- Integrated Oil & Gas3.7%—
- Oil & Gas Exploration & Production3.4%—
- Other holdings50.4%—
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 |
|---|---|---|---|---|---|
| $TROW | T. Rowe Price Group Inc | 645K | $57.8M | -14.6K | 20.8% |
| $GLW | Corning Incorporated | 105K | $14.3M | -80.2K | 5.1% |
| $AAPL | Apple Inc | 49K | $12.4M | +172 | 4.5% |
| $GOOGL | Alphabet Inc | 42.2K | $12.1M | -950 | 4.3% |
| $AMZN | Amazon.com Inc | 55.7K | $11.6M | +25.5K | 4.2% |
| $CVX | Chevron Corporation | 49.3K | $10.2M | -9.46K | 3.7% |
| $FANG | Diamondback Energy Inc | 48K | $9.48M | -14.7K | 3.4% |
| $MSFT | Microsoft Corporation | 22.7K | $8.41M | -232 | 3.0% |
| $QCOM | QUALCOMM Incorporated | 60.2K | $7.75M | +76 | 2.8% |
| $IBM | International Business Machines Corporation | 30.9K | $7.5M | -700 | 2.7% |
…and 84 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
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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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