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Major Depressive Disorder: 11 biotech companies competing in the clinic

Neurology & PsychiatryGold rushData as of 2026-09-04

Competitors11in the clinic
Median market cap$1.8Buniverse median $1.20B
Allocated capital$11.9B$40.2B competing
Phase 3 or filed74 mid, 0 early
Pure plays3this indication only
Capital rank9/299crowding rank 6

Major Depressive Disorder is both crowded and richly priced: 11 companies are in the clinic and the median one is worth $1.8B, against a universe median of $1.20B.

Crowded fields usually trade at a discount per company, so a premium in a field this deep says the market is pricing the size of the prize above the cost of the competition.

7 of the 11 are in Phase 3 or filed, and 9 dated catalysts fall in the next 12 months, so this ranking is likely to move.

$11.9B of allocated capital sits in Major Depressive Disorder, 9th of 299 indications, and 3 of the 11 companies are pure plays that trade on this indication alone.

Companies developing drugs for Major Depressive Disorder 11

TickerCompanyLead assetPhaseTrialsMarket capPure playIndicationsNext catalyst
NBIXNeurocrine BiosciencesNBI-1065845Phase 35$16.1BNo6 31 Dec 2027
XENEXenon PharmaceuticalsAzetukalnerPhase 33$5.8BNo4 7 Sep 2026
DFTXDefinium TherapeuticsDT120Phase 32$5.1BNo3 30 Sep 2026
CMPSCOMPASS PathwaysPsilocybinPhase 32$1.8BNo2 31 Dec 2026
HELPCybinCYB003Phase 33$825MYes1 31 Dec 2026
VNDAVanda PharmaceuticalsMilsaperidonePhase 31$323MNo7 12 Dec 2026
NMRANeumora TherapeuticsNMRA-335140Phase 31$250MYes1 31 Dec 2026
ACADACADIA PharmaceuticalsACP-211Phase 21$4.8BNo3 31 Oct 2026
SUPNSupernus PharmaceuticalsSPN-821Phase 21$2.6BNo4No dated event
SPTXSeaport TherapeuticsSPT-300Phase 22$1.3BYes1 31 Dec 2026
ANROAlto NeuroscienceALTO-300Phase 21$1.3BNo3 31 Dec 2026

Sorted by phase, then by market capitalisation. Ticker links open the company profile. NBIX holds 40% of the $40.2B competing in this indication.

Why Major Depressive Disorder is a gold rush

Crowded and richly priced: six or more competitors, and the median one is worth more than the median small or mid cap biotech.

The map splits indications on two folds: six or more competitors counts as crowded, and a median company above $1.20B counts as richly priced. Major Depressive Disorder has 11 competitors and a median of $1.8B.

Neurology & Psychiatry

Neurology & Psychiatry holds $120B of the map's capital, 17.9% of the total, spread across 46 indications and 58 companies. 19 of those indications have more than one company competing.

See every Neurology & Psychiatry indication on the map

Major Depressive Disorder pipeline questions

Which biotech companies are developing drugs for Major Depressive Disorder?

11 US-listed companies in the $100M to $20B market cap band run clinical programmes in Major Depressive Disorder. The largest and most advanced are Neurocrine Biosciences (NBIX, NBI-1065845, Phase 3); Xenon Pharmaceuticals (XENE, Azetukalner, Phase 3); Definium Therapeutics (DFTX, DT120, Phase 3); COMPASS Pathways (CMPS, Psilocybin, Phase 3); Cybin (HELP, CYB003, Phase 3). The full list of 11 is in the table on this page.

How advanced is the Major Depressive Disorder pipeline?

Of the 11 clinical-stage programmes in Major Depressive Disorder, 7 are in Phase 3 or filed, 4 are in mid-stage development and 0 are in early-stage development.

How much is the typical Major Depressive Disorder biotech company worth?

The median company developing a drug for Major Depressive Disorder is worth $1.8B, against a median of $1.20B across the whole universe. $11.9B of allocated capital sits in the indication, ranking it 9th of 299.

When is the next Major Depressive Disorder catalyst?

The next dated catalyst in Major Depressive Disorder is XENE on 7 Sep 2026. 9 dated events across the field fall in the next 12 months.

How this page is built

  • Universe is US-listed drug developers with a $100M to $20B market capitalisation, identified by SEC SIC code 2833, 2834 or 2836 or by a pharmaceutical or biotechnology industry classification, less a reviewed exclusion list of contract research organisations, device and diagnostics makers and diversified generics manufacturers.
  • An asset attributed to three or more different companies is treated as shared standard of care rather than any one company’s programme and excluded. Pembrolizumab alone appears under 21 tickers in raw trial data.
  • A programme counts only where at least one industry-sponsored trial supports it, so investigator-initiated academic studies of third-party drugs are excluded.

Allocated capital divides each company’s market capitalisation evenly across the indications it is running clinical programmes in, so every dollar of the universe is counted exactly once. Total market capitalisation competing counts a company in each of its indications and therefore sums to more than the universe.

Third-party market size estimates are not used anywhere on this page. Approved incumbents are excluded from competitor counts, and companies above $20B are outside the universe by construction.

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