AI Investment Challenge

Five AI models each received £500 of real money on Trading 212 on 3 August 2026. Same rules, same platform. Highest portfolio value after one year wins.

This is a personal experiment for entertainment and educational purposes only. Not financial advice. Capital is at risk. Portfolio totals are shown versus the original £500 starting capital.

Current Standings (as of 6 Sep 2026)

Rank Model Portfolio Value Return (£) Return (%) # Holdings
1 Gemini £581.56 +£81.56 +16.3% 4
2 Perplexity £578.09 +£78.09 +15.6% 4
3 ChatGPT £548.31 +£48.31 +9.7% 4
4 Grok £538.99 +£38.99 +7.8% 1
5 Claude £506.66 +£6.66 +1.3% 8

Performance Comparison

1. Gemini

£581.56  ·  +16.3%  ·  4 holdings
Ticker Ticker Name Exchange Value (£) Return (£) Return (%)
3NVD Leverage Shares 3x NVIDIA LSE £197.14 +£22.21 +12.7%
NVDA Nvidia NASDAQ £133.59 +£14.15 +11.8%
PLTR Palantir NASDAQ £129.83 +£34.97 +36.9%
3PLT Leverage Shares 3x Palantir LSE £121.00 -£2.35 -1.9%
Total £581.56 +£81.56 +16.3%
Back in first. Palantir remains the standout, with 3x NVIDIA also contributing. The 3x Palantir sleeve is slightly underwater.

2. Perplexity

£578.09  ·  +15.6%  ·  4 holdings
Ticker Ticker Name Exchange Value (£) Return (£) Return (%)
SMH3 Leverage Shares 3x Long Semiconductors LSE £236.32 -£14.06 -5.6%
NVD3 Leverage Shares 3x NVIDIA LSE £154.94 +£44.75 +40.6%
MU2 Leverage Shares 2x Micron Technology LSE £122.27 +£37.41 +44.1%
LASE Laser Photonics NASDAQ £64.56 +£8.67 +15.5%
Total £578.09 +£78.09 +15.6%
Still neck-and-neck with Gemini. 3x NVIDIA and 2x Micron are doing the heavy lifting; the 3x semiconductors product is the main drag.

3. ChatGPT

£548.31  ·  +9.7%  ·  4 holdings
Ticker Ticker Name Exchange Value (£) Return (£) Return (%)
SOXL Leverage Shares 4x Long Semiconductors LSE £351.29 +£15.10 +4.5%
NVDA Nvidia NASDAQ £143.58 +£15.21 +11.8%
RKLB Rocket Lab NASDAQ £27.43 -£1.41 -4.9%
PLTR Palantir NASDAQ £26.01 +£7.00 +36.8%
Total £548.31 +£48.31 +9.7%
Heavily concentrated in the 4x semiconductors product. Palantir is a small but strong sleeve; Rocket Lab is slightly down.

4. Grok

£538.99  ·  +7.8%  ·  1 holding
Ticker Ticker Name Exchange Value (£) Return (£) Return (%)
SOXL Leverage Shares 4x Long Semiconductors LSE £538.99 +£38.99 +7.8%
Total £538.99 +£38.99 +7.8%
Still all-in on the 4x semiconductors product. The early lead has fully unwound; now sitting fourth.

5. Claude

£506.66  ·  +1.3%  ·  8 holdings
Ticker Ticker Name Exchange Value (£) Return (£) Return (%)
VWRP Vanguard FTSE All-World (Acc) LSE £123.72 +£2.90 +2.4%
NVDA Nvidia NASDAQ £91.81 +£9.72 +11.8%
CSPX iShares Core S&P 500 (Acc) LSE £81.37 +£1.21 +1.5%
AMZN Amazon NASDAQ £63.76 -£5.89 -8.5%
NWG NatWest LSE £43.59 -£1.18 -2.6%
BA BAE Systems LSE £41.03 -£3.74 -8.4%
MSFT Microsoft NASDAQ £35.44 +£0.49 +1.4%
MU Micron Technology NASDAQ £25.94 +£5.53 +27.1%
Total £506.66 +£6.66 +1.3%
Still the most diversified book. Nvidia and Micron are helping; Amazon and BAE Systems are the main drags.

Rules & Methodology