Blume Capital Management, Inc.
SEC Form 13F institutional filer · CIK 0001587192
13F-HR · 173 reported holdings · 2026-03-31
Reported long-US-equity value
$0.40B
Top-10 concentration
44.4%
Blume Capital Management, Inc. — $397M AUM allocation strategy
Blume Capital Management, Inc. files SEC Form 13F and reports $397M of long US equity value across 173 reported holdings for 2026-03-31.
Its largest sector bet is Financials 16.8%, followed by Information Technology 15.6% and Communication Services 15.5%.
The top 10 holdings account for 44% 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.
Blume Capital Management, Inc. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$397M
total across 173 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
44% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$FISV +55K sh · +$2.36M+$GOOGL +31.6K sh · +$7.01M+$WY +28.3K sh · +$830K
Biggest trims (shares)
−$VZ −28.6K sh · −$1.14M−$XLE −23.4K sh · +$4.07M−$CL −20.6K sh · −$1.54M
Exited to nil (held last quarter, gone now)
$EOG ($42K last qtr)$ABBV ($22.8K last qtr)$PSX ($11.7K last qtr)$NOW ($2.3K last qtr)$SPYM ($321 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 & Services10.4%—
- Diversified Banks9.6%—
- Technology Hardware, Storage & Peripherals6.4%—
- Investment Banking & Brokerage4.2%—
- Semiconductors3.6%—
- Air Freight & Logistics3.5%—
- Copper3.4%—
- Semiconductor Materials & Equipment3.3%—
- Other holdings55.6%—
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
9 of 9 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $GOOGL | Alphabet Inc | 108K | $30.9M | +31.6K | 7.8% |
| $AAPL | Apple Inc | 100K | $25.5M | -1.35K | 6.4% |
| $C | Citigroup Inc | 150K | $17.1M | +9 | 4.3% |
| $SCHW | Charles Schwab Corporation | 193K | $16.4M | -334 | 4.1% |
| $MU | Micron Technology Inc | 42.2K | $14.3M | -15K | 3.6% |
| $FDX | FedEx Corporation | 38.8K | $13.8M | -5.26K | 3.5% |
| $FCX | Freeport-McMoRan Inc | 227K | $13.4M | -6.91K | 3.4% |
| $AMAT | Applied Materials Inc | 38.9K | $13.3M | -4.37K | 3.3% |
| $JNJ | Johnson & Johnson | 52.7K | $12.9M | -14K | 3.2% |
…and 164 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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