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Banco Santander, S.A.

SEC Form 13F institutional filer · CIK 0000891478

13F-HR · 269 reported holdings · 2026-03-31

Spanish banking group with asset management operations.

Reported long-US-equity value

$6.78B

Top-10 concentration

41.1%

Banco Santander, S.A. — $6.78B AUM allocation strategy

Banco Santander, S.A. files SEC Form 13F and reports $6.78B of long US equity value across 269 reported holdings for 2026-03-31.

Its largest sector bet is Information Technology 24.3%, followed by Communication Services 9.3% and Consumer Discretionary 4.3%.

The top 10 holdings account for 41% 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.

Banco Santander, S.A. — latest SEC 13F insights

Reported long-US-equity value (13F AUM)

$6.78B

total across 269 reported holdings · 2026-03-31 · excludes shorts, cash, non-US

Top-10 concentration

41% of value

higher = narrower conviction; lower = spread / hedging

Biggest adds (shares)

$MSFT$MDLZ$KO

+$MSFT +802K sh · +$179M+$MDLZ +573K sh · +$33.2M+$KO +330K sh · +$29.5M

Biggest trims (shares)

$KHC$AVGO$HAS

−$KHC −382K sh · −$9.49M−$AVGO −326K sh · −$130M−$HAS −287K sh · −$23.2M

Added from nil (new positions)

$DHI$CVNA$MMM$DUK$ALL

5 fresh holdings — new conviction

Exited to nil (held last quarter, gone now)

$KKR$NDAQ$XLK$RL$NI

$KKR ($23.6M last qtr)$NDAQ ($10.2M last qtr)$XLK ($9.1M last qtr)$RL ($7.89M last qtr)$NI ($7.54M last qtr)

Sector allocation (share of reported value)

Information Technology 24%Communication Services 9%ETFs 7%Consumer Discretionary 4%Financials 3%Consumer Staples 2%Health Care 2%Energy 1%Other holdings 46%SECTORS
  • $XLKInformation Technology24.3%—
  • $XLCCommunication Services9.3%—
  • ETFs7.0%—
  • $XLYConsumer Discretionary4.3%—
  • $XLFFinancials3.4%—
  • $XLPConsumer Staples2.3%—
  • $XLVHealth Care1.6%—
  • $XLEEnergy1.5%—
  • Other holdings46.3%—

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)

Systems Software 10%Semiconductors 9%Interactive Media & Services 8%Technology Hardware, Storage & Peripherals 5%Broadline Retail 4%Diversified Banks 3%Pharmaceuticals 2%Integrated Oil & Gas 1%Other holdings 57%INDUSTRIES
  • Systems Software10.0%—
  • Semiconductors9.0%—
  • Interactive Media & Services8.0%—
  • Technology Hardware, Storage & Peripherals5.3%—
  • Broadline Retail4.3%—
  • Diversified Banks3.4%—
  • Pharmaceuticals1.6%—
  • Integrated Oil & Gas1.5%—
  • Other holdings56.9%—

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 ↓

TickerHoldingSharesValueΔ QoQWeight
$MSFTMicrosoft Corporation1.84M$680M+802K10.0%
$NVDANVIDIA Corporation2.64M$460M-248K6.8%
$AAPLApple Inc1.4M$356M-230K5.3%
$AMZNAmazon.com Inc1.4M$292M-268K4.3%
$GOOGAlphabet Inc. Class C Capital Stock718K$207M-61.8K3.0%
$METAMeta Platforms Inc308K$176M-195K2.6%
$GOOGLAlphabet Inc555K$159M-42.8K2.3%
$JPMJP Morgan Chase & Co524K$154M+47.7K2.3%
$AVGOBroadcom Inc480K$149M-326K2.2%

…and 260 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 IRWhich funds bought or dumped the stock, before the next call.
Quant / algo tradersCross-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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