We would probably cap NBIS at 6% and GOOG at 8%. GOOG is, by far, the least risky of all of these stocks discussed. Not only is it (much) cheaper, we take comfort in its $260M of daily cash flow, its buybacks, and its massive R&D spending. It has adapted to the threat of AI in search and has lots of potential in numerous areas. NBIS, with $5B cash and new giant contracts, is probably less risky than PNG overall. NBIS has other divisions, but for now it is running on AI/datacentres. If this sector falters, NBIS will be hit hard. But, revenue and earnings are set to surge over the next five years with contracts in place. PNG is still vulnerable to 'chunky' revenue from large contracts. But it is executing well and now has more cash which will appease concerned potential customers. If trimming the others, we would be quite comfortable adding some PNG for diversity.
Authors of this answer, directors, partners and/or officers of 5i Research and/or affiliated companies have a financial or other interest in GOOG, NBIS.