FOX RUN MANAGEMENT, L.L.C.
SEC Form 13F institutional filer · CIK 0001533457
13F-HR · 203 reported holdings · 2026-03-31
Reported long-US-equity value
$0.21B
Top-10 concentration
15.8%
FOX RUN MANAGEMENT, L.L.C. — $213M AUM allocation strategy
FOX RUN MANAGEMENT, L.L.C. files SEC Form 13F and reports $213M of long US equity value across 203 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 5.9%, followed by Financials 4.4% and Information Technology 3.5%.
The top 10 holdings account for 16% of reported value — a broadly spread portfolio. 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.
FOX RUN MANAGEMENT, L.L.C. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$213M
total across 203 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
16% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$XLF −147K sh · −$8.2M−$AES −40K sh · −$589K−$VICI −21.4K sh · −$617K
Exited to nil (held last quarter, gone now)
$SPY ($6.69M last qtr)$IWM ($6.66M last qtr)$ROK ($2.48M last qtr)$ALGN ($2.34M last qtr)$BMY ($2.27M 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 Banks2.2%—
- Construction Machinery & Heavy Transportation Equipment2.0%—
- Semiconductors1.9%—
- Internet Services & Infrastructure1.6%—
- Packaged Foods & Meats1.2%—
- Diversified Banks1.2%—
- Heavy Electrical Equipment1.1%—
- Food Distributors1.1%—
- Other holdings87.7%—
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
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $CMI | Cummins Inc | 34.1K | $4.22M | +33.4K | 2.0% |
| $AKAM | Akamai Technologies Inc | 65.4K | $3.35M | +38.7K | 1.6% |
| $SJM | The J.M. Smucker Company | 27.6K | $2.63M | +25.4K | 1.2% |
| $C | Citigroup Inc | 24.3K | $2.61M | — | 1.2% |
| $BX | Blackstone Inc | 109K | $2.54M | +87K | 1.2% |
| $GNRC | Generac Holdlings Inc | 13K | $2.4M | — | 1.1% |
| $SYY | Sysco Corporation | 32.5K | $2.26M | — | 1.1% |
| $WST | West Pharmaceutical Services Inc | 9.05K | $2.22M | +5.26K | 1.0% |
| $NRG | NRG Energy Inc | 15.6K | $2.21M | — | 1.0% |
…and 194 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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