MDT vs MMSI: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 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: MDT 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. MDT and MMSI 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 MDT and MMSI 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.

Medtronic is one of the largest medical device companies in the world, designing, manufacturing, and selling therapies and devices across a broad range of chronic and acute conditions. Its business spans three main areas after October 2026: Cardiovascular (pacemakers, defibrillators, heart valves, and cardiac ablation), Neuroscience (spine implants, neuromodulation for pain and movement disorders, and surgical navigation), and Medical Surgical (surgical stapling, energy devices, and a growing robotic-surgery platform). Its former Diabetes unit (insulin pumps and continuous glucose monitoring) was carved out as MiniMed, which listed on Nasdaq under MMED; on October 15, 2026 Medtronic exchanged its remaining 252.8 million MiniMed shares for Medtronic shares in an exchange offer that was 5.4 times subscribed, so it no longer owns any of MiniMed. The company sells primarily to hospitals, surgeons, and health systems, generating durable, recurring demand tied to procedure volumes and chronic-disease management. Medtronic's scale gives it deep relationships with providers, a large installed base of devices, and the resources to fund extensive R&D and acquisitions. Growth depends on new product cycles, pipeline approvals, and global expansion, especially in emerging markets. Founded in 1949 and headquartered in Ireland for tax purposes (operationally rooted in Minnesota), Medtronic is a large-cap, dividend-growing medical-technology company tied to long-term healthcare demand and aging demographics, with trailing revenue of about $37.5 billion as of October 2026.

Full MDT guide

Merit Medical Systems designs, manufactures, and markets a broad catalog of single-use and capital medical devices used in minimally invasive procedures. Its business splits into two segments: Cardiovascular (peripheral intervention, cardiac intervention, interventional oncology and spine, and cardiovascular and critical care) and Endoscopy (non-vascular stents, balloon dilators, and related tools for gastroenterologists and pulmonologists). The company sells globally through direct sales forces and distributors, and it has grown trailing revenue to about $1.58 billion, with 2026 guidance of $1.631 to $1.643 billion, driven by a mix of organic volume and frequent product-line acquisitions.

Full MMSI guide

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

• MDT drivers: Diversified device portfolio; Innovation pipeline and new product cycles.
• MMSI drivers: Organic growth in interventional devices; Bolt-on acquisitions.

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: Medtronic has at times delivered sluggish organic growth, raising concerns that its scale slows innovation relative to nimbler competitors like Boston Scientific and Edwards Lifesciences. For MMSI, merit competes against far larger and better-capitalized device companies including Boston Scientific, Medtronic, Abbott, Teleflex, Becton Dickinson, and Terumo, which can pressure pricing and share.

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 MDT if you believe its drivers more; MMSI 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 MDT and MMSI guides.

MDT. At about $95 on October 16, 2026, Medtronic trades near 15 times forward earnings, a moderate multiple next to faster-growing medtech peers, while the GAAP trailing P/E of about 23x includes acquisition amortization. The 25 analysts tracked by Yahoo Finance hold a mean target near $104. The next report, expected around November 17, 2026, will be the first read on the company after the MiniMed exit, with consensus at about $1.33 of EPS on $9.5 billion of revenue.

MMSI. Merit trades around 37 times trailing GAAP earnings but about 19 times forward estimates, because GAAP results carry heavy acquisition amortization that non-GAAP EPS excludes. Q2 2026 revenue of $418.8 million rose 10 percent and non-GAAP EPS of $1.19 beat expectations, prompting management to raise full-year guidance to about 8 percent revenue growth and 11 to 14 percent non-GAAP EPS growth. The 11 covering analysts rate it a buy with a mean target near $102; Q3 results are due October 29, 2026, with consensus EPS near $1.03 on $410 million of revenue.

Headline figures (approximate, October 2026): MDT shows revenue (ttm) ~$37.5 billion, up ~14% year over year in the July 2026 quarter, margins ~65% gross, ~19% operating, ~14% net, net income (ttm) ~$5.2 billion, eps ~$4.07 GAAP trailing; ~$6.41 forward estimate; MMSI shows revenue (ttm) ~$1.58B; Q2 2026 up ~10% (9% organic constant currency), market cap ~$5.3B (share price ~$88.81), net income (ttm) ~$146M (profit margin ~9%), p/e ~37x trailing GAAP, ~19x forward.

MDT and MMSI 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 MDT and MMSI exposure against your real portfolio. It is not an investment adviser.