Walker & Dunlop originated $2.18 billion in Fannie Mae multifamily loans through mid-May 2026, securing the top spot on the agency lender leaderboard, according to CRED iQ data. The firm closed 110 loans across the period, averaging roughly $19.8 million per transaction. That volume narrowly outpaced CBRE Multifamily Capital at $1.88 billion and PGIM Real Estate Agency Financing at $1.56 billion.

The data set covers 1,071 Fannie Mae loans totaling $16.5 billion issued from January through May 2026. The top five originators—Walker & Dunlop, CBRE, PGIM, Newmark ($1.39 billion), and JLL Real Estate Capital ($1.22 billion)—accounted for half of all dollar volume. The top 10 captured roughly 78 percent of the market, per CRED iQ.

Concentration at this level is structural, not cyclical. The Delegated Underwriting and Servicing (DUS) framework rewards balance sheet scale, servicing infrastructure, and long-standing agency relationships. Smaller lenders cannot replicate the cost of capital or execution speed that the top tier delivers to borrowers.

Loan count reveals divergent origination strategies. Berkadia led all lenders with 172 loans, signaling a high-volume, smaller-balance approach. Walker & Dunlop's 110 loans carried a higher average balance, suggesting a focus on larger institutional-grade assets. The average Fannie Mae multifamily loan in 2026 YTD measured approximately $15.4 million.

Monthly origination volume accelerated through the first quarter before moderating. Volume climbed from roughly $3.1 billion in January to a 2026 peak of $5.6 billion in March, as borrowers moved to lock in financing amid shifting rate expectations. March alone accounted for more than one-third of first-quarter volume.

Refinancing is the primary engine of 2026 agency activity. Refinance loans represented 62.8 percent of total volume ($10.3 billion), reflecting a wave of borrowers addressing 2026 and 2027 loan maturities and replacing higher-cost bridge debt. Acquisition financing accounted for 36.1 percent ($5.95 billion). The refinance-heavy mix underscores how maturity management—rather than transaction velocity—is defining this lending cycle.

Gateway and Sun Belt metros dominated 2026 deployment. The New York–Newark–Jersey City metropolitan statistical area led all markets with $1.6 billion in Fannie Mae multifamily volume, followed by San Jose–Sunnyvale–Santa Clara ($750 million) and Los Angeles–Long Beach–Anaheim ($720 million). High-growth Sun Belt markets including Phoenix ($690 million), Miami–Fort Lauderdale ($630 million), and Dallas–Fort Worth ($600 million) also ranked among the top destinations for agency capital.

The 2026 Fannie Mae multifamily landscape is defined by concentration, refinancing demand, and a resilient appetite for gateway markets. With the top 10 lenders controlling nearly four-fifths of volume, scale and DUS relationships remain decisive competitive advantages.

For institutional investors and REIT analysts, the data confirms that agency debt remains the preferred refinancing channel for multifamily assets in a higher-for-longer rate environment. The refinance share—nearly two-thirds of volume—signals that borrowers are prioritizing extension over acquisition. That behavior will persist as long as the spread between agency coupons and alternative debt costs remains wide.

The concentration of origination among a handful of DUS lenders also carries implications for pricing and execution. When the top five firms control half the market, borrowers face limited negotiating leverage on rate and terms. The scale advantage accrues to the lenders, not the sponsors.

Walker & Dunlop's top ranking is a function of execution consistency, not a single blockbuster quarter. The firm's $2.18 billion in originations reflects a steady pipeline of refinancing mandates from institutional owners. That book of business is repeatable, scalable, and defensible—exactly the characteristics that agency lenders prize.

The question for 2027 is whether refinancing demand can sustain this volume. If rate cuts materialize and transaction activity picks up, acquisition financing could reclaim share. But for now, the agency market is a refinancing machine, and Walker & Dunlop is running it.