Union Square Park Capital Management Expands Investments with New Stakes in Five Securities

Lennar's 1Q shows a very high level of institutional ownership, with 81.10% of the stock held by institutions.
Caxton Associates LLP lifted its Lennar stake by 875.8% in the first quarter, reaching 45,589 shares valued at about $3.96 million after acquiring 40,917 additional shares.
For Builders FirstSource, Northwestern Mutual Wealth Management Co. boosted its stake dramatically to 2,241,561 shares worth approximately $230.6 million after purchasing about 2.24 million more shares in the last quarter; Norges Bank also opened a new position in BLDR in the fourth quarter worth around $109.3 million.
LightPath Technologies saw significant insider activity: Run Strategic Opportunit North sold 3,571,400 shares on June 3 for about $49.9996 million, reducing the insider stake to 2,934,828 shares worth roughly $41.1 million, while Jane Street Group LLC increased its position by 92.1% to 60,612 shares worth about $122,000.
The ITA ETF position disclosed shows Union Square Park bought 10,000 shares for about $2.188 million, making ITA roughly 1.2% of its portfolio and ranking as the 15th-largest holding, with ITA trading around $240 per share at the time.
Union Square Park Capital Management LLC made a flurry of new investments in the first quarter, opening five fresh positions across housing, fintech, defense, and optics. The firm's biggest new bet was a $2.19 million stake in the iShares U.S. Aerospace & Defense ETF, according to Ticker Report, making the ETF its 15th-largest holding at roughly 1.2% of its total portfolio.
The other new positions included 10,000 shares of homebuilder Lennar Corporation for about $868,000, 10,000 shares of Builders FirstSource for roughly $823,000, 50,000 shares of LightPath Technologies for around $502,000, and 100,000 shares of Oportun Financial Corporation for about $461,000. The moves signal a broad, tactical push into housing, defense, and small-cap tech.
The iShares U.S. Aerospace & Defense ETF, ticker ITA, was trading around $240 per share when Union Square Park made its purchase, according to Ticker Report. The firm bought 10,000 shares, spending about $2.19 million. That makes ITA the firm's 15th-largest holding and its single biggest new position this quarter.
ITA tracks a basket of U.S. defense and aerospace companies. Buying the ETF — rather than individual stocks — lets investors spread risk across the sector. The move comes as defense spending stays elevated globally, making the sector attractive to institutional money managers.
Union Square Park opened positions in two housing-related companies this quarter. It bought 10,000 shares of Lennar, one of the largest U.S. homebuilders, for about $868,000. It also picked up 10,000 shares of Builders FirstSource, a supplier of building materials, for roughly $823,000, according to Watchlist News.
Union Square Park was not alone in eyeing these stocks. Caxton Associates LLP grew its Lennar stake by 875.8% in the first quarter, reaching 45,589 shares worth about $3.96 million. For Builders FirstSource, Northwestern Mutual Wealth Management bought about 2.24 million more shares, lifting its total to 2,241,561 shares worth roughly $230.6 million. Norges Bank also opened a new Builders FirstSource position in the fourth quarter worth around $109.3 million.
Union Square Park's $502,000 stake in LightPath Technologies — 50,000 shares — came during a turbulent period for the small-cap optics company, according to Watchlist News. On June 3, insider Run Strategic Opportunit North sold 3,571,400 shares for about $49.9 million, cutting its stake down to 2,934,828 shares worth roughly $41.1 million.
Not everyone was selling. Jane Street Group LLC increased its LightPath position by 92.1%, bringing its total to 60,612 shares worth about $122,000. The mix of insider selling and institutional buying shows the stock is attracting attention — though not everyone agrees on direction.
The final new position was 100,000 shares of Oportun Financial Corporation, a consumer lending fintech, worth about $461,000. At roughly $4.61 per share implied by the filing, the stake is Union Square Park's smallest new buy of the quarter. Oportun serves low-income borrowers and has faced pressure from rising loan defaults in recent years.
Taken together, Union Square Park's five new positions span homebuilding, building materials, defense, optics, and consumer finance. The spread suggests the firm is not making a single macro bet. Instead, it is placing smaller, targeted wagers across sectors — a classic diversified tactical allocation strategy, according to Ticker Report.
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