NRG
NRG Energy, Inc.
stock NYSE

Ok so I've been chewing on this for a few weeks and I can't find a good reason not to do it, which usually means I'm missing something obvious.
Idea: take the 20 US large caps with the highest trailing P/E. Equal weight, approx $500 each ($10k total). Automatically rebalance every quarter so names that mean-revert drop out and names that keep compounding stay.
The reasoning, such as it is:
\- A stock trades at a 400+ P/E because the market has decided it's worth pricing in years of future growth right now. Sometimes the market is wrong and it's a bubble. But sometimes it's not and sometimes it's the market spotting a compounder early and refusing to let it get cheap. I don't know which is which on any individual name. But across 20 of them, equal-weighted, I figure the winners drag the basket up more than the bubbles drag it down.
Also: every "P/E factor" study I can find tests low P/E vs high P/E and concludes value wins long-term which is fine. But none of them seem to test "literally just the top 20 most expensive names, rebalanced". The Russell 1000 Growth isn't this and NASDAQ isn't this. There's no ETF for it that I can find.
So either:
1. Someone has tested it and it's a known disaster, in which case please link me
2. It works fine but is too weird/embarrassing to package as a product
3. I'm misunderstanding why no one does this
Current list attached. Heavy on tech and semis (AMD, Palantir, Datadog, Microchip), Tesla obviously, a few REITs that surprised me, CoStar, Live Nation.
| Ticker | Name | Sector | P/E Ratio (TTM) |
| --- | --- | --- | --- |
| DDOG | Datadog Inc | Technology | 582.35 |
| CSGP | CoStar Group Inc | Real Estate | 530.86 |
| LYV | Live Nation Entertainment Inc | Communication Services | 462.55 |
| TSLA | Tesla Inc | Consumer Cyclical | 390.62 |
| CIEN | Ciena Corp | Technology | 372.60 |
| TWLO | Twilio Inc. | Communication Services | 278.07 |
| MCHP | Microchip Technology Inc | Technology | 262.58 |
| OMC | Omnicom Group Inc | Communication Services | 242.01 |
| GPC | Genuine Parts Co | Consumer Cyclical | 222.28 |
| DKNG | DraftKings Inc. | Consumer Cyclical | 197.82 |
| AMD | Advanced Micro Devices Inc | Technology | 164.07 |
| VTR | Ventas Inc | Real Estate | 161.58 |
| AXON | Axon Enterprise Inc. | Industrials | 149.73 |
| LITE | Lumentum Holdings Inc | Technology | 148.04 |
| PLTR | Palantir Technologies Inc. | Technology | 143.33 |
| IRM | Iron Mountain Incorporated | Real Estate | 139.97 |
| PANW | Palo Alto Networks Inc | Technology | 139.20 |
| FANG | Diamondback Energy Inc | Energy | 136.93 |
| COHR | Coherent Inc | Technology | 126.43 |
| NRG | NRG Energy Inc. | Utilities | 121.63 |
(i extracted this list using Obside, but I double checked with Yahoo Finance and all good)
What am I missing?

Ok so I've been chewing on this for a few weeks and I can't find a good reason not to do it, which usually means I'm missing something obvious.
Idea: take the 20 US large caps with the highest trailing P/E. Equal weight, approx $500 each ($10k total). Automatically rebalance every quarter so names that mean-revert drop out and names that keep compounding stay.
The reasoning, such as it is:
\- A stock trades at a 400+ P/E because the market has decided it's worth pricing in years of future growth right now. Sometimes the market is wrong and it's a bubble. But sometimes it's not and sometimes it's the market spotting a compounder early and refusing to let it get cheap. I don't know which is which on any individual name. But across 20 of them, equal-weighted, I figure the winners drag the basket up more than the bubbles drag it down.
Also: every "P/E factor" study I can find tests low P/E vs high P/E and concludes value wins long-term which is fine. But none of them seem to test "literally just the top 20 most expensive names, rebalanced". The Russell 1000 Growth isn't this and NASDAQ isn't this. There's no ETF for it that I can find.
So either:
1. Someone has tested it and it's a known disaster, in which case please link me
2. It works fine but is too weird/embarrassing to package as a product
3. I'm misunderstanding why no one does this
Current list attached. Heavy on tech and semis (AMD, Palantir, Datadog, Microchip), Tesla obviously, a few REITs that surprised me, CoStar, Live Nation.
| Ticker | Name | Sector | P/E Ratio (TTM) |
| --- | --- | --- | --- |
| DDOG | Datadog Inc | Technology | 582.35 |
| CSGP | CoStar Group Inc | Real Estate | 530.86 |
| LYV | Live Nation Entertainment Inc | Communication Services | 462.55 |
| TSLA | Tesla Inc | Consumer Cyclical | 390.62 |
| CIEN | Ciena Corp | Technology | 372.60 |
| TWLO | Twilio Inc. | Communication Services | 278.07 |
| MCHP | Microchip Technology Inc | Technology | 262.58 |
| OMC | Omnicom Group Inc | Communication Services | 242.01 |
| GPC | Genuine Parts Co | Consumer Cyclical | 222.28 |
| DKNG | DraftKings Inc. | Consumer Cyclical | 197.82 |
| AMD | Advanced Micro Devices Inc | Technology | 164.07 |
| VTR | Ventas Inc | Real Estate | 161.58 |
| AXON | Axon Enterprise Inc. | Industrials | 149.73 |
| LITE | Lumentum Holdings Inc | Technology | 148.04 |
| PLTR | Palantir Technologies Inc. | Technology | 143.33 |
| IRM | Iron Mountain Incorporated | Real Estate | 139.97 |
| PANW | Palo Alto Networks Inc | Technology | 139.20 |
| FANG | Diamondback Energy Inc | Energy | 136.93 |
| COHR | Coherent Inc | Technology | 126.43 |
| NRG | NRG Energy Inc. | Utilities | 121.63 |
(i extracted this list using Obside, but I double checked with Yahoo Finance and all good)
What am I missing?