TANDEM CAPITAL MANAGEMENT CORP /ADV
SEC Form 13F institutional filer · CIK 0000873759
13F-HR · 68 reported holdings · 2026-03-31
Reported long-US-equity value
$0.15B
Top-10 concentration
42.8%
TANDEM CAPITAL MANAGEMENT CORP /ADV — $152M AUM allocation strategy
TANDEM CAPITAL MANAGEMENT CORP /ADV files SEC Form 13F and reports $152M of long US equity value across 68 reported holdings for 2026-03-31.
Its largest sector bet is Industrials 20.5%, followed by Information Technology 14.8% and Communication Services 12.6%.
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.
TANDEM CAPITAL MANAGEMENT CORP /ADV — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$152M
total across 68 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
43% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$NVDA +5.59K sh · +$889K+$AMZN +3.13K sh · +$423K+$COF +1.9K sh · −$246K
Biggest trims (shares)
−$QCOM −12.5K sh · −$2.78M−$SCHW −4.19K sh · −$547K−$T −3.42K sh · −$1.15M
Exited to nil (held last quarter, gone now)
$PYPL ($745K last qtr)$VRSK ($240K last qtr)$SLB ($238K last qtr)$BLK ($228K 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)
- Interactive Media & Services12.6%—
- Aerospace & Defense10.0%—
- Health Care Equipment9.0%—
- Systems Software5.5%—
- Heavy Electrical Equipment5.2%—
- Semiconductor Materials & Equipment3.6%—
- Investment Banking & Brokerage3.3%—
- Technology Hardware, Storage & Peripherals3.3%—
- Other holdings47.5%—
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
10 of 10 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $GE | GE Aerospace | 32.8K | $9.31M | -1.09K | 6.1% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 32K | $9.21M | -1.03K | 6.1% |
| $MSFT | Microsoft Corporation | 22.7K | $8.41M | -740 | 5.5% |
| $GEV | GE Vernova Inc | 9.1K | $7.94M | -256 | 5.2% |
| $AMAT | Applied Materials Inc | 16.3K | $5.57M | -959 | 3.7% |
| $META | Meta Platforms Inc | 9.09K | $5.2M | -320 | 3.4% |
| $SCHW | Charles Schwab Corporation | 63.9K | $4.97M | -4.19K | 3.3% |
| $AAPL | Apple Inc | 19.4K | $4.93M | -569 | 3.2% |
| $JPM | JP Morgan Chase & Co | 16.2K | $4.77M | -190 | 3.1% |
| $ETN | Eaton Corporation PLC | 13.2K | $4.72M | -506 | 3.1% |
…and 58 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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