As President Trump Tackles Housing Affordability, Progress Emerges — and More Relief Is on the Horizon

Existing-home sales surged in December to their strongest pace in three years as income growth outpaced home-price gains, while affordability metrics (First American Real House Price Index and the NAR Housing Affordability Index) have shown sustained improvement and the 30-year fixed mortgage rate has fallen to multi-year lows. The administration is directing Fannie Mae and Freddie Mac to buy $200 billion of mortgage-backed securities and pursuing limits on large institutional purchases of single-family homes to increase supply and reduce borrowing costs—moves that could materially affect MBS spreads, mortgage rates and housing-sector liquidity if implemented.

Analysis

Winners will be homebuilders (DHI, PHM, LEN), mortgage-backed security holders, and mortgage originators if lower 30-year rates persist; losers include institutional single-family landlords (INVH, AMH) and fixed-rate lenders with tight hedges. Lower borrowing costs plus policy to keep inventory for households shifts pricing power toward retail buyers and midsize builders, pressuring rental yield spreads and institutional buy-and-hold models.

Tail risks: legal/operational challenges to a directed $200bn MBS purchase, a Fed pause that reverses the downtrend in long rates, or an employment/income shock that re-inflates delinquencies. Time horizons matter: rate-driven MBS repricing can occur in days-weeks; homebuilder revenue and inventory effects play out over quarters; structural supply increases unfold over years.

Trade implications favor long MBS proxies (MBB) and selective long builders/ETF (ITB, XHB) with hedges versus short exposure to institutional landlord names (INVH, AMH) and mortgage REITs with poor hedges (NLY, AGNC) if spreads compress. Use options to define risk: buy call spreads on ITB and MBB, protective puts on long mortgage REIT holdings; catalyst windows 2–12 weeks around GSE purchase execution and monthly existing-home sales/CPI prints.

Contrarian view: consensus assumes permanent buyer subsidy; regulatory reversals or legal losses could spike MBS volatility and widen spreads, making short-dated volatility buys attractive. Also if supply acceleration materially increases listings, builders could face margin pressure—avoid unhedged large-cap builder longs into Q3–Q4 2026 unless absorption improves.

Key Decisions for Investors

• Establish a 2% portfolio long in ITB (iShares U.S. Home Construction ETF) split into 1% outright and 1% via a 3-month ITB 1.5/3.0 call spread; add if 30-year fixed falls below 6.5% or existing-home sales beat by >3% month-over-month, target +15–25% in 3–9 months, stop at -8%.
• Initiate a 1.5% short position in INVH (Invitation Homes) funded via borrow or short ETF equivalents if within 30 days a federal rule banning large institutional single-family purchases is formalized; target downside 15% within 3–6 months, stop-loss +10%.
• Buy 1.5% position in MBB (iShares MBS ETF) and add another 1.5% within 7 trading days of an announced $200bn GSE MBS purchase; target 3–6% total return in 1–3 months, sell half on a 3% gain and remainder on 6% or if 10-year >4.5%.
• Reduce unhedged exposure to mortgage REITs (NLY, AGNC) by 50% immediately; replace with 0.5% risk-defined collar (buy 3-month puts, sell higher-strike calls) to retain convex upside if rates fall further, reassess after next two CPI prints.