BLUEFIN CAPITAL MANAGEMENT, LLC
SEC Form 13F institutional filer · CIK 0001144208
13F-HR · 18 reported holdings · 2026-03-31
Reported long-US-equity value
$0.02B
Top-10 concentration
87.9%
BLUEFIN CAPITAL MANAGEMENT, LLC — $20M AUM allocation strategy
BLUEFIN CAPITAL MANAGEMENT, LLC files SEC Form 13F and reports $20M of long US equity value across 18 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 14.8%, followed by Financials 13.2% and Health Care 11.1%.
The top 10 holdings account for 88% 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.
BLUEFIN CAPITAL MANAGEMENT, LLC — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$20M
total across 18 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
88% of value
higher = narrower conviction; lower = spread / hedging
Biggest trims (shares)
−$CMG −768K sh · −$28.5M−$PSKY −341K sh · −$4.66M−$BMY −87.2K sh · −$4.63M
Exited to nil (held last quarter, gone now)
$NFLX ($8.41M last qtr)$TSLA ($3.94M last qtr)$AXP ($2.4M last qtr)$UPS ($2.27M last qtr)$WBD ($1.97M 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)
- Pharmaceuticals11.1%—
- Diversified Banks9.8%—
- IT Consulting & Other Services7.2%—
- Interactive Media & Services4.6%—
- Semiconductors4.5%—
- Restaurants4.4%—
- Wireless Telecommunication Services2.0%—
- Technology Hardware, Storage & Peripherals1.8%—
- Other holdings54.6%—
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
8 of 8 rows · sorted by Value ↓
| Ticker | Holding | Shares | Value | Δ QoQ | Weight |
|---|---|---|---|---|---|
| $C | Citigroup Inc | 17.2K | $1.95M | — | 9.8% |
| $IBM | International Business Machines Corporation | 5.97K | $1.45M | +4.97K | 7.2% |
| $PFE | Pfizer Inc | 39.8K | $1.12M | -32.8K | 5.6% |
| $MU | Micron Technology Inc | 2.68K | $906K | — | 4.5% |
| $CMG | Chipotle Mexican Grill Inc | 27.3K | $874K | -768K | 4.4% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 2.23K | $643K | -3.36K | 3.2% |
| $BMY | Bristol-Myers Squibb Company | 10.3K | $625K | -87.2K | 3.1% |
| $MRK | Merck & Company Inc | 4K | $481K | — | 2.4% |
…and 10 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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