American Investment Services, Inc.
SEC Form 13F institutional filer · CIK 0001369913
13F-HR · 56 reported holdings · 2026-03-31
Reported long-US-equity value
$0.11B
Top-10 concentration
65.1%
American Investment Services, Inc. — $109M AUM allocation strategy
American Investment Services, Inc. files SEC Form 13F and reports $109M of long US equity value across 56 reported holdings for 2026-03-31.
Its largest sector bet is Financials 20.8%, followed by Health Care 19.0% and Energy 10.9%.
The top 10 holdings account for 65% 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.
American Investment Services, Inc. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$109M
total across 56 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
65% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$MRK +10.7K sh · +$2.12M+$VOO +6.62K sh · +$369K+$IVV +2.22K sh · +$191K
Biggest trims (shares)
−$DOW −25.1K sh · −$344K−$SCHW −14.3K sh · −$501K−$VZ −14K sh · +$1.23M
Exited to nil (held last quarter, gone now)
$CSCO ($737K last qtr)$CAT ($598K last qtr)$SBAC ($222K last qtr)$PFE ($201K 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)
- Pharmaceuticals13.5%—
- Integrated Oil & Gas10.9%—
- Investment Banking & Brokerage9.0%—
- Integrated Telecommunication Services8.8%—
- Asset Management & Custody Banks4.8%—
- Financial Exchanges & Data4.6%—
- Biotechnology4.5%—
- Multi-Sector Holdings2.5%—
- Other holdings41.5%—
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
7 of 7 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $CVX | Chevron Corporation | 57.1K | $11.8M | -405 | 10.9% |
| $SCHW | Charles Schwab Corporation | 361K | $9.72M | -14.3K | 8.9% |
| $VZ | Verizon Communications Inc | 190K | $9.54M | -14K | 8.8% |
| $MRK | Merck & Company Inc | 66.5K | $8M | +10.7K | 7.3% |
| $JNJ | Johnson & Johnson | 22.1K | $5.41M | -1.2K | 5.0% |
| $SPGI | S&P Global Inc | 89.1K | $5.01M | -2.35K | 4.6% |
| $AMGN | Amgen Inc | 14K | $4.92M | +1.63K | 4.5% |
…and 49 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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