DDD vs NNDM: 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.

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. DDD and NNDM 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 DDD and NNDM 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.

3D Systems Corporation is one of the original additive manufacturing companies, offering a broad portfolio of 3D printers, print materials, software, and on-demand manufacturing services. It reports in two segments. Healthcare Solutions covers dental, medical devices, and regenerative technologies like bioprinting, and in Q1 2026 grew about 21% year over year (roughly $50 million) on strength in Dental and Med Tech, each up over 20%. Industrial Solutions serves aerospace, defense, and general manufacturing and grew more modestly (roughly $45 million). Total Q1 2026 revenue was about $95.5 million, up ~1% reported but ~11% excluding divestitures, and healthcare has grown to a scale that now rivals the industrial business.

Full DDD guide

Nano Dimension is an additive-manufacturing company whose original niche is 3D printing for electronics: its systems print circuit boards and additive electronics, aimed at rapid prototyping and specialized production for defense, aerospace, and research customers. Over 2025 it pursued an aggressive roll-up of the industrial 3D-printing sector, completing the acquisition of Desktop Metal in April 2025 and Markforged shortly after, in an attempt to assemble a broad additive-manufacturing platform spanning polymers, metals, and electronics. The company has long carried an unusually large cash balance relative to its revenue: at June 30, 2026 it reported about $433.3 million of cash, equivalents, deposits and marketable equity securities (including $349.1 million of cash and equivalents and $83.0 million of marketable securities), down from $441.6 million at March 31, against only ~$27 million of debt. That war chest, which could fund restructuring, a capital return, or further deals, is the core of the investment case.

Full NNDM guide

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

• DDD drivers: Healthcare as the growth engine; Margin recovery and cost discipline.
• NNDM drivers: Large cash balance as a cushion; Additive-manufacturing consolidation, then simplification.

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: The central risk is that 3D Systems is a small, not-yet-consistently-profitable turnaround, so the thesis depends on execution that has not been fully proven. For NNDM, the central risk is that Nano Dimension is a speculative, loss-making company whose story hinges on capital allocation and restructuring rather than proven, growing profits.

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 DDD if you believe its drivers more; NNDM 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 DDD and NNDM guides.

DDD. With no GAAP profit and analysts expecting a loss of about $0.14 per share for 2026, earnings multiples are not meaningful, so the stock trades on sales (about 1.2x trailing revenue) and margin trajectory. The shares rose about 56% in 2026 through October 16 but fell about 20% in the past month, a reminder of how volatile a sub-$5 small cap can be. The early-November third-quarter report, with consensus near $97 million of revenue, is the next checkpoint.

NNDM. These figures are approximate and drawn from the Q2 2026 report and Yahoo Finance as of October 16, 2026; verify live numbers in the latest SEC filings. Because Nano Dimension is unprofitable, earnings multiples are not meaningful, and many investors instead watch its market value versus its net cash: at about $605 million, the market cap sits roughly $200 million above the ~$406 million of net cash and securities, yet the stock trades at about 0.6 times book value. Governance, the pending Markforged close, any capital return decision, and cash-burn progress tend to move the stock far more than any conventional valuation metric.

Headline figures (approximate, October 2026): DDD shows revenue (ttm) ~$388 million, ~flat yoy in Q2 2026, q2 2026 revenue / adjusted eps ~$94.6 million / -$0.04 vs ~-$0.05 expected, gross margin (ttm) ~34%, operating margin (ttm) ~-11%; NNDM shows revenue (ttm) ~$121 million (Q2 2026: ~$29.0 million, +12% YoY), gross margin (q2 2026) ~45.9% GAAP, up from ~27.3%, net income (ttm) ~-$140 million, cash, deposits and securities (june 30, 2026) ~$433 million (debt ~$27 million).

DDD and NNDM 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 DDD and NNDM exposure against your real portfolio. It is not an investment adviser.