Tarbox Family Office, Inc.
SEC Form 13F institutional filer · CIK 0001599603
13F-HR · 54 reported holdings · 2026-03-31
Reported long-US-equity value
$0.40B
Top-10 concentration
92.8%
Tarbox Family Office, Inc. — $398M AUM allocation strategy
Tarbox Family Office, Inc. files SEC Form 13F and reports $398M of long US equity value across 54 reported holdings for 2026-03-31.
Its largest sector bet is Health Care 4.1%, followed by Industrials 2.4% and Information Technology 2.0%.
The top 10 holdings account for 93% 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.
Tarbox Family Office, Inc. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$398M
total across 54 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
93% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$IVV −181K sh · −$21.1M−$AAPL −5.96K sh · −$2.03M−$VOO −2.97K sh · −$268K
Added from nil (new positions)
None this quarter
Exited to nil (held last quarter, gone now)
$NVDA ($1.77M last qtr)$AVGO ($624K last qtr)$ORCL ($346K last qtr)$TSLA ($313K last qtr)$BAC ($306K 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)
- Biotechnology2.4%—
- Technology Hardware, Storage & Peripherals1.4%—
- Health Care Equipment1.3%—
- Aerospace & Defense1.2%—
- Agricultural & Farm Machinery1.0%—
- Diversified Banks0.7%—
- Specialty Chemicals0.6%—
- Systems Software0.6%—
- Other holdings90.9%—
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
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $ABBV | AbbVie Inc | 43.6K | $9.49M | -683 | 2.4% |
| $AAPL | Apple Inc | 22.9K | $5.82M | -5.96K | 1.5% |
| $ABT | Abbott Laboratories | 51.5K | $5.29M | -649 | 1.3% |
| $DE | Deere & Company | 6.47K | $3.64M | -130 | 0.9% |
| $HONA | Honeywell Aerospace Inc | 5 | $3.59M | +0 | 0.9% |
| $USB | U.S. Bancorp | 48.9K | $2.54M | -623 | 0.6% |
| $PPG | PPG Industries Inc | 21.2K | $2.27M | -21 | 0.6% |
| $MSFT | Microsoft Corporation | 6.04K | $2.23M | -2.6K | 0.6% |
…and 46 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.