PROFESSIONAL ADVISORY SERVICES INC
SEC Form 13F institutional filer · CIK 0000894205
13F-HR · 64 reported holdings · 2026-03-31
Reported long-US-equity value
$0.00B
Top-10 concentration
42.5%
PROFESSIONAL ADVISORY SERVICES INC — $667K AUM allocation strategy
PROFESSIONAL ADVISORY SERVICES INC files SEC Form 13F and reports $667K of long US equity value across 64 reported holdings for 2026-03-31.
Its largest sector bet is Financials 17.2%, followed by Information Technology 15.2% and Consumer Discretionary 11.7%.
The top 10 holdings account for 43% 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.
PROFESSIONAL ADVISORY SERVICES INC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$667K
total across 64 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
43% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$IVV +57.6K sh · +$4.39K+$TMUS +23.4K sh · +$5.12K+$AJG +18.6K sh · +$724
Biggest trims (shares)
−$T −121K sh · −$1.28K−$SYY −30.3K sh · −$2.83K−$PEP −27.8K sh · −$2.03K
Added from nil (new positions)
None this quarter
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)
- Semiconductors6.5%—
- Interactive Media & Services5.3%—
- Systems Software5.1%—
- Broadline Retail4.8%—
- Multi-Sector Holdings4.4%—
- Life Sciences Tools & Services4.3%—
- Soft Drinks & Non-alcoholic Beverages3.9%—
- Technology Hardware, Storage & Peripherals3.6%—
- Other holdings62.0%—
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 |
|---|---|---|---|---|---|
| $GOOGL | Alphabet Inc | 123K | $35.3K | -6.41K | 5.3% |
| $MSFT | Microsoft Corporation | 91.5K | $33.9K | +11.8K | 5.1% |
| $AMZN | Amazon.com Inc | 154K | $32K | +9.19K | 4.8% |
| $BRK.B | Berkshire Hathaway Inc.-Class B | 61.6K | $29.5K | +3.73K | 4.4% |
| $TMO | Thermo Fisher Scientific Inc | 59K | $29K | +8K | 4.3% |
| $PEP | PepsiCo Inc | 166K | $25.8K | -27.8K | 3.9% |
| $AAPL | Apple Inc | 95.2K | $24.2K | +946 | 3.6% |
| $BKNG | Booking Holdings Inc | 5.71K | $24K | +1.43K | 3.6% |
| $J | Jacobs Solutions Inc | 188K | $24K | +10.9K | 3.6% |
…and 55 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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