Robeco Institutional Asset Management B.V.
SEC Form 13F institutional filer · CIK 0001418773
13F-HR · 454 reported holdings · 2026-03-31
Asset management firm, subsidiary of Robeco.
Reported long-US-equity value
$57.94B
Top-10 concentration
34.4%
Robeco Institutional Asset Management B.V. — $57.9B AUM allocation strategy
Robeco Institutional Asset Management B.V. files SEC Form 13F and reports $57.9B of long US equity value across 454 reported holdings for 2026-03-31.
Its largest sector bet is Information Technology 24.4%, followed by Communication Services 7.7% and Consumer Discretionary 4.0%.
The top 10 holdings account for 34% 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.
Robeco Institutional Asset Management B.V. — latest SEC 13F insights
Reported long-US-equity value (13F AUM)
$57.9B
total across 454 reported holdings · 2026-03-31 · excludes shorts, cash, non-US
Top-10 concentration
34% of value
higher = narrower conviction; lower = spread / hedging
Biggest adds (shares)
+$SLB +7.08M sh · +$368M+$HAL +2.07M sh · +$92.1M+$FTV +2M sh · +$111M
Biggest trims (shares)
−$BSX −2.89M sh · −$279M−$PYPL −2.87M sh · −$180M−$INTC −1.91M sh · −$54.7M
Exited to nil (held last quarter, gone now)
$PSA ($1.58M last qtr)$LYB ($1.57M last qtr)$EVRG ($425K last qtr)$ETR ($357K last qtr)$ARES ($338K 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)
- Semiconductors10.0%—
- Interactive Media & Services7.7%—
- Technology Hardware, Storage & Peripherals6.3%—
- Systems Software4.6%—
- Broadline Retail3.0%—
- Biotechnology2.0%—
- Semiconductor Materials & Equipment1.8%—
- Transaction & Payment Processing Services1.8%—
- Other holdings62.7%—
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 |
|---|---|---|---|---|---|
| $NVDA | NVIDIA Corporation | 26.2M | $4.58B | +1.31M | 7.9% |
| $AAPL | Apple Inc | 14.3M | $3.63B | +1.02M | 6.3% |
| $MSFT | Microsoft Corporation | 7.31M | $2.71B | -644K | 4.7% |
| $GOOG | Alphabet Inc. Class C Capital Stock | 9.1M | $2.62B | -105K | 4.5% |
| $AMZN | Amazon.com Inc | 8.43M | $1.76B | -708K | 3.0% |
| $AVGO | Broadcom Inc | 3.92M | $1.21B | +407K | 2.1% |
| $META | Meta Platforms Inc | 1.66M | $950M | -260K | 1.6% |
| $GOOGL | Alphabet Inc | 3.19M | $915M | +312K | 1.6% |
| $JPM | JP Morgan Chase & Co | 3.01M | $884M | -770K | 1.5% |
| $ABBV | AbbVie Inc | 3.25M | $707M | +40.2K | 1.2% |
…and 444 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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