MTG vs RDN: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of August 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: RDN is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. MTG and RDN share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined MTG and RDN exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

MGIC Investment Corporation (NYSE: MTG) is the holding company for Mortgage Guaranty Insurance Corporation, one of the largest private mortgage insurers in the United States. Private mortgage insurance protects lenders and investors against losses when borrowers with high loan-to-value mortgages (typically less than a 20% down payment) default, which lets more people buy homes with smaller down payments. MGIC earns recurring premium income from its large insurance-in-force portfolio (roughly $303 billion as of early 2026), and policies generally stay in force until borrowers refinance, sell, or build enough equity to cancel coverage. It remained the No. 1 private mortgage insurer by market share heading into 2026.

Full MTG guide

Radian Group runs two operating segments after a year of restructuring. The Mortgage segment, written through Radian Guaranty, sells private mortgage insurance to lenders on conventional loans where the borrower puts down less than 20 percent. The insurer collects a monthly or single premium and pays a claim if the loan defaults and the property sells for less than the outstanding balance. Scale is measured in insurance in force rather than in revenue: ~$284 billion of primary insurance in force at June 30, 2026, sitting on ~$75.4 billion of risk in force, produced ~$474.5 million of net premiums earned in the first half. The Specialty segment is Inigo, the Lloyd's of London underwriter Radian bought for ~$1.67 billion on February 2, 2026, which writes property, casualty, marine, energy and other specialty lines through Syndicate 1301 and contributed ~$431.7 million of net premiums earned over the same six months. Three other businesses are on their way out. Real Estate Services was sold to PLACE in August 2026, the title insurance business is under a definitive agreement expected to close in the fourth quarter, and the mortgage conduit has been substantially wound down, all three carried as discontinued operations.

Full RDN guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• MTG drivers: Recurring premium from insurance-in-force; Aggressive capital return.
• RDN drivers: The in-force book runs on persistency, not new sales; Half the premium now comes from a Lloyd's syndicate.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: MGIC's core business is highly dependent on the housing market and employment, so its main structural risk is the credit cycle. For RDN, the Specialty segment ran a ~93.0 percent combined ratio in the first half of 2026, which leaves thin margin before an underwriting loss, and Lloyd's syndicates carry catastrophe exposure that arrives in lumps rather than in trend lines.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick MTG if you believe its drivers more; RDN if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the MTG and RDN guides.

MTG. MGIC trades at a low single-digit-to-high-single-digit earnings multiple and near book value (book value per share around $24), reflecting the market's discount for cyclical mortgage-insurance earnings. Q1 2026 delivered net income of about $165 million and an annualized return on equity near 13%, with revenue of about $297 million that slightly missed estimates as net premiums earned edged down year over year. Valuation figures are approximate and move with the stock price.

RDN. Insurance holding companies are read on book value and return on equity, so the ~2.9 times sales multiple a screener prints for RDN carries almost no information about what the business is worth. At ~1.02 times book the stock sits at the low end of the ~0.9 to ~1.3 times range US mortgage insurers have generally occupied, while the forward multiple of ~7.3 times already embeds the mid-teens EPS accretion management guided to from Inigo. Whether the discount reflects the delinquency cycle, the ~93 percent specialty combined ratio, or the change of chief executive is the open argument.

Headline figures (approximate, JULY 2026): MTG shows revenue (ttm) ~$1.2B, net income (ttm) ~$738M, q1 2026 net income ~$165M ($0.76/sh), market cap ~$5.6B; RDN shows revenue (ttm) ~$1.65 billion for the twelve months to June 30, 2026, up ~37.5 percent, against ~$1.197 billion in fiscal 2025, ~$1.206 billion in 2024 and ~$1.177 billion in 2023. The increase is acquired rather than organic: it represents roughly five months of Inigo, consolidated from February 2, 2026. Second-quarter revenue alone was ~$575 million, up ~93 percent year over year, on net premiums earned of ~$504 million (up ~115.7 percent) and net investment income of ~$70 million (up ~21.1 percent). First-half 2026 total revenue was ~$1.041 billion., earnings and eps Net income of ~$536 million for the twelve months to June 30, 2026, down ~8.6 percent, for diluted EPS of ~$3.89 against ~$4.14 in 2025, ~$3.92 in 2024 and ~$3.77 in 2023. First-half 2026 net income was ~$240.0 million, split between ~$247.7 million from continuing operations and a ~$7.7 million loss from discontinued ones. The second quarter produced ~$118 million, or ~$0.87 diluted, from continuing operations, with adjusted diluted net operating income of ~$1.14 per share., segment mix and operating metrics In the first half of 2026 the Mortgage segment earned ~$474.5 million of net premiums at a ~33.0 percent combined ratio, while the Specialty segment earned ~$431.7 million at a ~93.0 percent combined ratio that still carries integration and purchase-accounting effects. Primary mortgage insurance in force reached a record ~$284 billion at June 30, 2026, up ~3 percent, on ~$75.4 billion of risk in force. New insurance written was ~$16.3 billion in the quarter, up ~14 percent. Persistency was ~82 percent, up ~70 basis points, and the primary default rate ~2.47 percent versus ~2.27 percent a year earlier., balance sheet and regulatory capital Total assets of ~$10.66 billion at June 30, 2026, up ~31 percent on the acquisition, with shareholders' equity of ~$4.8 billion and reserves for losses and loss adjustment expense of ~$1.91 billion. Total debt was ~$1.345 billion, up from ~$1.193 billion at year-end 2025, and ~$600 million of the Inigo purchase price came from a 10-year, 6.50 percent intercompany note issued by Radian Guaranty. Book value per share was ~$36.00, up ~8.5 percent year over year. Radian Guaranty held ~$1.5 billion of available assets above its PMIERs minimum..

MTG and RDN are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined MTG and RDN exposure against your real portfolio. It is not an investment adviser.