Harry Harrison @HarryH1993: "📊 Portfolio Update — April..."

United Kingdom

📊 Portfolio Update — April 10, 2026 Hey everyone, happy Friday! A lot has happened in the past week across the portfolio, so let me walk you through some of the moves I am watching most closely. 🏠 Morgan Stanley Goes Big on $OPEN (Opendoor Technologies Inc) The headline story for me this week is Morgan Stanley disclosing a 10.2% stake in Opendoor via a 13G/A filing — nearly 98 million shares as of March 31, roughly double the 5.3% stake they held at year-end. Morgan Stanley reports beneficial ownership of 97,870,639 shares, representing 10.2% of Opendoor's common stock Stocktitan. Frustratingly, the market barely reacted — shares actually slipped around 1% pre-market despite the disclosure Inshorts, and OPEN is still down roughly 20% year to date. A marquee institution quietly doubling down while retail gives up is exactly the kind of setup I want to be on the right side of. Pair that with the Doma acquisition last week and the 21% week-over-week jump in acquisition contracts, and the operating story is quietly getting better even if the tape does not show it yet - accountable.opendoor.com/ 🤖 $NBIS (Nebius Group NV) Rips Higher Again Nebius had a monster session yesterday and followed it up with more strength today. Every few weeks the market seems to re-rate it higher as the scale of the Meta deal and the Nvidia-backed buildout sinks in. I am not adding at these levels, but I am absolutely not trimming either. When a business is guiding to 6-7x its ARR inside twelve months, the multiple is going to look silly either way — either now or in hindsight. This is still, in my opinion, one of the most asymmetric AI infrastructure bets in public markets. 🧠 Anthropics's New "Mythos" Model & Why I Care as an Investor Anthropic's new model, Mythos, has become so strong at finding and exploiting software vulnerabilities that they wanted defenders to get a head start before a model of this caliber is widely accessible. Over the past few weeks, Mythos identified thousands of zero-day vulnerabilities, many of them critical, some of them over two decades old. On the CyberGym benchmark, Mythos scored 83.1% versus 66.6% for Opus 4.6; a huge jump between model generations. A more capable frontier models mean more demand for the compute layer underneath them, which circles right back to $NBIS and $ASML.NV. The AI infra thesis does not work if model progress stalls and Mythos is a signal that it very much has not stalled, even if Anthropic aren't making it available for the public. 🗓️ Looking Ahead Next week I am watching the start of Q1 earnings season kicking off with the big US banks, fresh CPI data, and any follow-through on the OPEN institutional story. Earnings from my names start trickling in later in the month, and I will be paying close attention to $LMND (Lemonade Inc.) and $SOFI (SoFi Technologies Inc) commentary in particular. Hope everyone has a great weekend! 😃 Harry Not financial advice.

Not investment advice. The author may have financial interests in the mentioned instruments.