CIK: 0001418427
Total reported value
$4.7B
Reporting period: 2026-03-31 · Number of holdings: 126
Robeco Schweiz AG disclosed 126 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $4.7B and a quarterly turnover rate of 32.6%.
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Robeco Schweiz AG's disclosed holdings carry a Herfindahl concentration index of 0.018 — mathematically equivalent to about 57 equally-sized positions, well below its 126 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.11), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Add ARM
+52.0% $80.0M
Trim PTC
-80.8% -$54.5M
Trim AVTR
-42.5% -$50.6M
Add ON
+50.3% $50.8M
Add ITRI
+125.3% $46.1M
Add GNRC
+27.5% $42.2M
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | VRT | Vertiv Holdings Co-a | Stock-Industrials | 3.83% | +0.66% | -17.27% | |
| 2 | PWR | Quanta Services INC | Stock-Industrials | 3.75% | +0.72% | +1.02% | |
| 3 | NVT | nVent Electric plc | Stock-Industrials | 3.56% | +0.34% | +0.92% | |
| 4 | ARM | Arm Holdings Plc-adr | Stock-Tech | 3.22% | +1.60% | +52.02% | |
| 5 | LITE | Lumentum Holdings INC | Stock-Tech | 3.19% | — | -46.31% | |
| 6 | A | Agilent Technologies INC | Stock-Healthcare | 2.69% | -0.51% | +6.53% | |
| 7 | FSLR | First Solar INC | Stock-Tech | 2.69% | -0.47% | +19.78% | |
| 8 | ADI | Analog Devices INC | Stock-Tech | 2.65% | +0.79% | +29.04% | |
| 9 | ADSK | Autodesk INC | Stock-Tech | 2.60% | -0.76% | +1.13% | |
| 10 | ON | On Semiconductor | Stock-Tech | 2.57% | +0.99% | +50.35% | |
| 11 | MRVL | Marvell Technology INC | Stock-Tech | 2.52% | +0.76% | +30.28% | |
| 12 | RRX | Regal Rexnord CORP | Stock-Industrials | 2.27% | +0.49% | +1.02% | |
| 13 | MPWR | Monolithic Power Systems INC | Stock-Tech | 2.20% | +0.27% | -0.03% | |
| 14 | NXT | Nextpower Inc-cl A | Stock-Tech | 2.19% | +0.42% | -5.21% | |
| 15 | GNRC | Generac Holdings INC | Stock-Industrials | 1.97% | +0.83% | +27.50% | |
| 16 | ITRI | Itron INC | Stock-Tech | 1.80% | +0.92% | +125.31% | |
| 17 | LSCC | Lattice Semiconductor CORP | Stock-Tech | 1.77% | +0.30% | +1.02% | |
| 18 | XYL | Xylem INC | Stock-Industrials | 1.76% | -0.57% | -8.47% | |
| 19 | CSL | Carlisle Cos INC | Stock-Industrials | 1.76% | — | +1.02% | |
| 20 | VLTO | Veralto CORP | Stock-Industrials | 1.59% | — | +16.00% | |
| 21 | TT | Trane Technologies plc | Stock-Industrials | 1.54% | +0.49% | +44.29% | |
| 22 | IEX | Idex CORP | Stock-Industrials | 1.52% | — | -8.13% | |
| 23 | TTEK | Tetra Tech INC | Stock-Industrials | 1.46% | -0.30% | -2.55% | |
| 24 | PCOR | Procore Technologies INC | Stock-Tech | 1.41% | -0.47% | +1.02% | |
| 25 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 1.36% | — | +13.46% | |
| 26 | RUN | Sunrun INC | Stock-Tech | 1.21% | — | +43.31% | |
| 27 | DHR | Danaher CORP | Stock-Healthcare | 1.15% | — | +6.89% | |
| 28 | FERG | Ferguson Enterprises INC | Stock-Industrials | 1.15% | — | -7.13% | |
| 29 | BEPC | Brookfield Renewable CORP | Stock-Utilities | 1.13% | — | +1.02% | |
| 30 | SQM | Quimica Y Minera Chil-sp Adr | Stock-Other | 1.06% | — | -10.03% | |
| 31 | ECL | Ecolab INC | Stock-Materials | 1.05% | -0.31% | -19.41% | |
| 32 | EME | Emcor Group INC | Stock-Industrials | 1.00% | +0.38% | +42.09% | |
| 33 | POWI | Power Integrations INC | Stock-Tech | 0.94% | +0.44% | +38.68% | |
| 34 | FIX | Comfort Systems USA INC | Stock-Industrials | 0.92% | +0.24% | -3.68% | |
| 35 | WAT | Waters CORP | Stock-Healthcare | 0.91% | — | +9.67% | |
| 36 | APG | Api Group CORP | Stock-Industrials | 0.90% | -0.30% | -25.21% | |
| 37 | WMS | Advanced Drainage Systems In | Stock-Industrials | 0.89% | -0.29% | -15.35% | |
| 38 | AIT | Applied Industrial Tech INC | Stock-Industrials | 0.87% | — | +3.55% | |
| 39 | TER | Teradyne INC | Stock-Tech | 0.85% | — | -44.59% | |
| 40 | ENPH | Enphase Energy INC | Stock-Tech | 0.84% | +0.84% | NEW | |
| 41 | WM | Waste Management INC | Stock-Industrials | 0.83% | -0.69% | -44.79% | |
| 42 | J | Jacobs Solutions INC | Stock-Industrials | 0.82% | — | +12.95% | |
| 43 | CNM | Core & Main Inc-class A | Stock-Industrials | 0.79% | — | -7.06% | |
| 44 | GLW | Corning INC | Stock-Tech | 0.75% | +0.42% | +53.96% | |
| 45 | BE | Bloom Energy Corp- A | Stock-Industrials | 0.75% | +0.75% | NEW | |
| 46 | ALB | Albemarle CORP | Stock-Materials | 0.74% | -0.29% | -40.26% | |
| 47 | AVTR | Avantor INC | Stock-Healthcare | 0.69% | -1.18% | -42.46% | |
| 48 | ACM | Aecom | Stock-Industrials | 0.67% | — | -2.33% | |
| 49 | MWH | Solv Energy Inc-cl A | Stock-Other | 0.64% | +0.64% | NEW | |
| 50 | COHR | Coherent CORP | Stock-Tech | 0.58% | +0.34% | +98.96% |
Performance for Q3 2026
-4.9%
Performance Last 4 Quarters
+31.1%
Based on 82% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 126 | $4.7B | 33 | |
| 2025-12-31 | 129 | $4.5B | 23 | |
| 2025-09-30 | 128 | $4.4B | 31 | |
| 2025-06-30 | 126 | $4.3B | 0 | |
| 2025-03-31 | 129 | $4.1B | 100 | |
| 2024-12-31 | 120 | $4.7B | 0 | |
| 2024-09-30 | 120 | $5.3B | 0 | |
| 2024-06-30 | 122 | $5.2B | 0 | |
| 2024-03-31 | 120 | $5.7B | 0 | |
| 2023-12-31 | 119 | $6.0B | 0 | |
| 2023-09-30 | 122 | $5.9B | 0 | |
| 2023-06-30 | 120 | $6.7B | 0 | |
| 2023-03-31 | 121 | $6.2B | 0 | |
| 2022-12-31 | 119 | $5.5B | 0 | |
| 2022-09-30 | 156 | $5.1B | 0 | |
| 2022-06-30 | 154 | $5.6B | 0 | |
| 2022-03-31 | 153 | $7.1B | 0 | |
| 2021-12-31 | 149 | $7.7B | 0 | |
| 2021-09-30 | 152 | $8.6B | 0 | |
| 2021-06-30 | 151 | $7.2B | 100 | |
| 2021-03-31 | 151 | $6.5B | 57 | |
| 2020-12-31 | 155 | $4.7B | 37 | |
| 2020-09-30 | 151 | $3.4B | 34 | |
| 2020-06-30 | 143 | $2.8B | 36 | |
| 2020-03-31 | 139 | $2.3B | 35 | |
| 2019-12-31 | 134 | $2.7B | 33 | |
| 2019-09-30 | 158 | $2.3B | 23 | |
| 2019-06-30 | 158 | $2.4B | 28 | |
| 2019-03-31 | 157 | $2.4B | 23 | |
| 2018-12-31 | 156 | $2.2B | 31 | |
| 2018-09-30 | 167 | $2.6B | 18 | |
| 2018-06-30 | 175 | $2.3B | 20 | |
| 2018-03-31 | 179 | $2.2B | 50 | |
| 2017-12-31 | 177 | $1.5B | 27 | |
| 2017-09-30 | 174 | $1.3B | 33 | |
| 2017-06-30 | 179 | $1.2B | 18 | |
| 2017-03-31 | 186 | $1.2B | 23 | |
| 2016-12-31 | 189 | $1.1B | 30 | |
| 2016-09-30 | 177 | $1.2B | 24 | |
| 2016-06-30 | 179 | $1.1B | 21 | |
| 2016-03-31 | 179 | $1.0B | 32 | |
| 2015-12-31 | 188 | $1.2B | 35 | |
| 2015-09-30 | 197 | $1.1B | 32 | |
| 2015-06-30 | 168 | $1.2B | 27 | |
| 2015-03-31 | 162 | $1.3B | 31 | |
| 2014-12-31 | 162 | $1.3B | 34 | |
| 2014-09-30 | 166 | $1.3B | 28 | |
| 2014-06-30 | 175 | $1.2B | 34 | |
| 2014-03-31 | 170 | $1.2B | 40 | |
| 2013-12-31 | 154 | $1.1B | 43 | |
| 2013-09-30 | 162 | $1.2B | 36 | |
| 2013-06-30 | 164 | $1.1B | — |
Robeco Schweiz AG's most significant position changes for 2026-03-31: New buy: Enphase Energy INC (ENPH); New buy: Bloom Energy Corp- A (BE); New buy: Solv Energy Inc-cl A (MWH); New buy: Spx Technologies INC (SPXC); Sold out: Celestica INC (CLS).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ARM | Arm Holdings Plc-adr | +1.6% | +52.02% | Add |
| 2 | ON | On Semiconductor | +1% | +50.35% | Add |
| 3 | ITRI | Itron INC | +0.9% | +125.31% | Add |
| 4 | GNRC | Generac Holdings INC | +0.8% | +27.50% | Add |
| 5 | ADI | Analog Devices INC | +0.8% | +29.04% | Add |
| 6 | MRVL | Marvell Technology INC | +0.8% | +30.28% | Add |
| 7 | PWR | Quanta Services INC | +0.7% | +1.02% | Add |
| 8 | VRT | Vertiv Holdings Co-a | +0.7% | -17.27% | Trim |
| 9 | RRX | Regal Rexnord CORP | +0.5% | +1.02% | Add |
| 10 | TT | Trane Technologies plc | +0.5% | +44.29% | Add |
| 11 | POWI | Power Integrations INC | +0.4% | +38.68% | Add |
| 12 | NXT | Nextpower Inc-cl A | +0.4% | -5.21% | Trim |
| 13 | GLW | Corning INC | +0.4% | +53.96% | Add |
| 14 | EME | Emcor Group INC | +0.4% | +42.09% | Add |
| 15 | NVT | nVent Electric plc | +0.3% | +0.92% | Add |
| 16 | COHR | Coherent CORP | +0.3% | +98.96% | Add |
| 17 | LSCC | Lattice Semiconductor CORP | +0.3% | +1.02% | Add |
| 18 | COR | Cencora INC | +0.3% | +213.36% | Add |
| 19 | MPWR | Monolithic Power Systems INC | +0.3% | -0.03% | Trim |
| 20 | FIX | Comfort Systems USA INC | +0.2% | -3.68% | Trim |
| 21 | VIAV | Viavi Solutions INC | +0.2% | +10.92% | Add |
| 22 | AUGO | Aura Minerals Inc. | +0.2% | +10.00% | Add |
| 23 | HSAI | Hesai Group | -0.3% | -28.75% | Trim |
| 24 | MTD | Mettler-toledo International | -0.3% | -26.93% | Trim |
| 25 | ALB | Albemarle CORP | -0.3% | -40.26% | Trim |
| 26 | WMS | Advanced Drainage Systems In | -0.3% | -15.35% | Trim |
| 27 | APG | Api Group CORP | -0.3% | -25.21% | Trim |
| 28 | TTEK | Tetra Tech INC | -0.3% | -2.55% | Trim |
| 29 | ECL | Ecolab INC | -0.3% | -19.41% | Trim |
| 30 | TEL | TE Connectivity plc | -0.4% | -41.42% | Trim |
| 31 | PNR | Pentair plc | -0.4% | -30.17% | Trim |
| 32 | IR | Ingersoll-rand INC | -0.5% | -76.46% | Trim |
| 33 | PCOR | Procore Technologies INC | -0.5% | +1.02% | Add |
| 34 | FSLR | First Solar INC | -0.5% | +19.78% | Add |
| 35 | A | Agilent Technologies INC | -0.5% | +6.53% | Add |
| 36 | CLH | Clean Harbors INC | -0.6% | -91.92% | Trim |
| 37 | XYL | Xylem INC | -0.6% | -8.47% | Trim |
| 38 | WM | Waste Management INC | -0.7% | -44.79% | Trim |
| 39 | ADSK | Autodesk INC | -0.8% | +1.13% | Add |
| 40 | AVTR | Avantor INC | -1.2% | -42.46% | Trim |
| 41 | PTC | Ptc INC | -1.2% | -80.76% | Trim |
| 42 | ENPH | Enphase Energy INC | — | NEW | New buy |
| 43 | BE | Bloom Energy Corp- A | — | NEW | New buy |
| 44 | MWH | Solv Energy Inc-cl A | — | NEW | New buy |
| 45 | SPXC | Spx Technologies INC | — | NEW | New buy |
| 46 | CLS | Celestica INC | — | EXIT | Sold out |
| 47 | DELL | Dell Technologies -c | — | EXIT | Sold out |
| 48 | GDDY | Godaddy INC - Class A | — | EXIT | Sold out |
| 49 | FROG | JFrog Ltd. | — | EXIT | Sold out |
| 50 | CMC | Commercial Metals Co | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-07 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-03 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-27 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-07 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-30 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-05 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-04 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-08-08 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-04-25 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-02-14 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-11-08 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-14 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-05-08 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-02-07 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-10 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-08-03 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-13 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-08 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-10-13 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-15 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-04 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-16 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-13 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-07 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-10 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-19 | Amendment | View on EDGAR |
| 2019-12-31 | 2020-02-13 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-18 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-31 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-14 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-01 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-30 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-09 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-16 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-14 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-09 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-15 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-10 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-01-10 | Amendment | View on EDGAR |
| 2016-12-31 | 2017-01-09 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-15 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-12 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-18 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-16 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-27 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-24 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-04-20 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-01-26 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-10-22 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-08 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-05 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-01-22 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-12 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-01 | 13F-HR | View on EDGAR |
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