Fund detail
Parnassus Investments
large-active, lo, esg
Quarters
52
2020-12-31
$36.86B
Positions
114
2026-03-31
2025-12-31
2025-09-30
2025-06-30
2025-03-31
2024-12-31
2024-09-30
2024-06-30
2024-03-31
2023-12-31
2023-09-30
2023-06-30
2023-03-31
2022-12-31
2022-09-30
2022-06-30
2022-03-31
2021-12-31
2021-09-30
2021-06-30
2021-03-31
2020-12-31
2020-09-30
2020-06-30
2020-03-31
2019-12-31
2019-09-30
2019-06-30
2019-03-31
2018-12-31
2018-09-30
2018-06-30
2018-03-31
2017-12-31
2017-09-30
2017-06-30
2017-03-31
2016-12-31
2016-09-30
2016-06-30
2016-03-31
2015-12-31
2015-09-30
2015-06-30
2015-03-31
2014-12-31
2014-09-30
2014-06-30
2014-03-31
2013-12-31
2013-09-30
2013-06-30
Price is the latest implied close from the selected quarter's 13F (value ÷ shares). Est. Cost is a running average that assumes each quarter's trades cleared near the midpoint of consecutive 13F closes (or yfinance VWAP when available). Most accurate for slow accumulators, least accurate for activists who build positions in a few days.
| # | Issuer | Value ↓ | Weight | Shares | Share Δ | Share Δ % | Prev Weight | First Held | Price | Est. Cost | Unrealized % | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Western Digital Corp. WDC | $303.8M | 0.82% | 5,484,431 | +0 | +0.00% | 0.62% | 2020-03-31 | $55 | ~$41 | +34.19% | |
| 2 | Trimble Inc. TRMB | $201.9M | 0.55% | 3,024,053 | +0 | +0.00% | 0.46% | 2013-09-30 | $67 | ~$41 | +63.17% | |
| 3 | Roper Technologies Inc. ROP | $166.7M | 0.45% | 386,749 | +0 | +0.00% | 0.47% | 2020-03-31 | $431 | ~$318 | +35.57% | |
| 4 | Maxim Integrated Products Inc. MXIM | $166.1M | 0.45% | 1,873,762 | +0 | +0.00% | 0.39% | 2020-03-31 | $89 | ~$50 | +77.74% | |
| 5 | IDACORP Inc. IDA | $149.9M | 0.41% | 1,561,368 | +0 | +0.00% | 0.39% | 2019-09-30 | $96 | ~$105 | -8.55% | |
| 6 | First Republic Bank, Class A FRCB | $144.3M | 0.39% | 982,123 | +0 | +0.00% | 0.33% | 2018-03-31 | $147 | ~$95 | +54.74% | |
| 7 | Lam Research Corp. LRCXEUR | $141.7M | 0.38% | 300,000 | +0 | +0.00% | 0.31% | 2013-06-30 | $472 | ~$152 | +210.97% | |
| 8 | W.W. Grainger Inc. GWW | $134.8M | 0.37% | 330,000 | +0 | +0.00% | 0.37% | 2014-09-30 | $408 | ~$274 | +48.86% | |
| 9 | Cable One Inc. CABO | $130.1M | 0.35% | 58,416 | +0 | +0.00% | 0.34% | 2020-03-31 | $2,228 | ~$1,662 | +34.01% | |
| 10 | Discover Financial Services DFSEUR | $112.3M | 0.30% | 1,240,000 | +0 | +0.00% | 0.22% | 2020-06-30 | $91 | ~$51 | +78.09% | |
| 11 | American Express Co. AXP | $108.8M | 0.30% | 900,000 | +0 | +0.00% | 0.28% | 2015-03-31 | $121 | ~$91 | +32.34% | |
| 12 | Bank of America Corp. BAC | $90.9M | 0.25% | 3,000,000 | +0 | +0.00% | 0.22% | 2019-09-30 | $30 | ~$29 | +4.30% | |
| 13 | Dentsply Sirona Inc. XRAY | $87.6M | 0.24% | 1,673,244 | +0 | +0.00% | 0.23% | 2016-03-31 | $52 | ~$55 | -4.35% | |
| 14 | Expeditors International of Washington Inc. EXPD | $85.6M | 0.23% | 900,000 | +0 | +0.00% | 0.25% | 2013-06-30 | $95 | ~$70 | +35.20% | |
| 15 | MDU Resources Group Inc. MDU | $83.2M | 0.23% | 3,157,636 | +0 | +0.00% | 0.22% | 2013-06-30 | $26 | ~$25 | +4.35% | |
| 16 | Portland General Electric Corp. POR | $74.3M | 0.20% | 1,736,225 | +0 | +0.00% | 0.19% | 2020-03-31 | $43 | ~$48 | -9.98% | |
| 17 | Illumina Inc. ILMN | $73.4M | 0.20% | 198,399 | +0 | +0.00% | 0.19% | 2019-09-30 | $370 | ~$326 | +13.34% | |
| 18 | Cummins Inc. CMI | $51.1M | 0.14% | 225,000 | +0 | +0.00% | 0.15% | 2015-09-30 | $227 | ~$139 | +63.68% | |
| 19 | CoStar Group Inc. CSGP | $35.8M | 0.10% | 38,700 | +0 | +0.00% | 0.10% | 2020-06-30 | $924 | ~$711 | +30.06% | |
| 20 | IDEXX Laboratories Inc. IDXX | $35.6M | 0.10% | 71,268 | +0 | +0.00% | 0.09% | 2020-03-31 | $500 | ~$242 | +106.35% | |
| 21 | Old Dominion Freight Lines Inc. ODFL | $28.3M | 0.08% | 145,211 | +0 | +0.00% | 0.08% | 2018-12-31 | $195 | ~$82 | +137.08% | |
| 22 | Pool Corp. POOL | $27.6M | 0.07% | 74,084 | +0 | +0.00% | 0.08% | 2020-06-30 | $372 | ~$272 | +37.01% | |
| 23 | The New York Times Co., Class A NYT | $24.2M | 0.07% | 467,258 | +0 | +0.00% | 0.06% | 2020-06-30 | $52 | ~$42 | +23.17% | |
| 24 | Avalara Inc. AVLRUSD | $24.1M | 0.07% | 146,177 | +0 | +0.00% | 0.06% | 2020-06-30 | $165 | ~$132 | +24.82% | |
| 25 | MarketAxess Holdings Inc. MKTX | $22.7M | 0.06% | 39,739 | +0 | +0.00% | 0.06% | 2020-06-30 | $571 | ~$500 | +14.03% | |
| 26 | Ansys Inc. AKX | $22.1M | 0.06% | 60,677 | +0 | +0.00% | 0.06% | 2020-06-30 | $364 | ~$292 | +24.70% | |
| 27 | Thomson Reuters Corp. | $22.0M | 0.06% | 268,893 | +0 | +0.00% | 0.07% | 2018-12-31 | $82 | ~$48 | +69.51% | |
| 28 | Broadridge Financial Solutions Inc. BR | $21.6M | 0.06% | 141,281 | +0 | +0.00% | 0.06% | 2020-06-30 | $153 | ~$126 | +21.40% | |
| 29 | Monolithic Power Systems Inc. MPWR | $18.4M | 0.05% | 50,262 | +0 | +0.00% | 0.04% | 2019-06-30 | $366 | ~$136 | +169.71% | |
| 30 | Herman Miller Inc. MLKN | $17.2M | 0.05% | 510,000 | +0 | +0.00% | 0.05% | 2020-09-30 | $34 | ~$30 | +12.07% |