Overbrook Management Corp
SEC Form 13F institutional filer · CIK 0001269786
13F-HR · 37 reported holdings · 2026-03-31
Reported long-US-equity value
$0.48B
Top-10 concentration
63.2%
Overbrook Management Corp — $482M AUM allocation strategy
Overbrook Management Corp files SEC Form 13F and reports $482M of long US equity value across 37 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 34.6%, followed by Communication Services 22.7% and Consumer Discretionary 12.8%.
The top 10 holdings account for 63% 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.
Overbrook Management Corp — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$482M
total across 37 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
63% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NFLX +111K sh · +$10.9M+$ORLY +54.8K sh · +$5.24M+$UBER +39.4K sh · +$1.31M
Biggest trims (shares)
−$ARES −98.1K sh · −$18.5M−$TMUS −18.3K sh · −$3.17M−$MU −15.2K sh · −$2.91M
Exited to nil (held last quarter, gone now)
$INTU ($14.6M last qtr)$ADP ($233K last qtr)$GM ($223K 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)
- Semiconductors22.9%—
- Interactive Media & Services13.4%—
- Systems Software6.2%—
- Broadline Retail6.2%—
- Technology Hardware, Storage & Peripherals5.4%—
- Pharmaceuticals5.3%—
- Automotive Retail4.2%—
- Construction Machinery & Heavy Transportation Equipment3.7%—
- Other holdings32.6%—
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 |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 319K | $55.6M | +1.84K | 11.5% |
| $GOOGL | Alphabet Inc | 132K | $37.7M | +1.18K | 7.8% |
| $AVGO | Broadcom Inc | 113K | $35M | -818 | 7.3% |
| $MSFT | Microsoft Corporation | 81K | $30M | -6.5K | 6.2% |
| $AMZN | Amazon.com Inc | 144K | $29.9M | -1.89K | 6.2% |
| $META | Meta Platforms Inc | 47.3K | $27M | -10.6K | 5.6% |
| $AAPL | Apple Inc | 102K | $26M | -2.38K | 5.4% |
| $LLY | Eli Lilly and Company | 27.9K | $25.6M | -402 | 5.3% |
| $ORLY | O'Reilly Automotive Inc | 216K | $20M | +54.8K | 4.1% |
| $CAT | Caterpillar Inc | 25.4K | $18M | — | 3.7% |
…and 27 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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