2026-08-19
No AI summary for this filing type
View Full Filing (SEC EDGAR)Mereo Biopharma Group Pl-adr
$0.38+3.5%
-$4.5M
Net Activity
-24.75% total shares
Institutions Holding
62
Popularity Rank
#5632
Avg Weight
0.02%
Total Value
$18.2M
Market Cap
$302.9M
62 institutions currently hold MREO, with 29 net buyers and 30 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
30
Net Buying Institutions
29
Top 5 by Value
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Across its top 20 institutional holders, MREO's holder base skews toward low-concentration, high-turnover investors on average (avg. concentration score 15/100, avg. turnover score 61/100).
MREO ranks #5632 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
62 institutions disclose a position in MREO, but none treat it as a major bet — even Defilade Capital Management, L.P., its most concentrated holder, allocates just 0.3% of its own portfolio to it.
GAMMA Investing LLC has trimmed its MREO position for two straight quarters, cutting it by $5.6K while still holding $800.0.
MREO is up 3.5% today, but institutions show net selling of $4.5M this quarter — a divergence between today's price move and the underlying institutional flow.
MREO reported a net loss of $28.1M over the trailing twelve months.
+$1.3M
Total Buy Value
$7.2M
Total Sell Value
29
Net Buyers
30
Net Sellers
MREO
Q2 2026
Top 5 Institutional Movers
-$4.1M
-$1.4M
-$1.2M
+$357.1K
+$244.2K
MREO does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
0
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| EcoR1 Capital, LLC | 13G/A | 2026-08-14 | 0.6% |
3
Filings (14d)
No AI summary for this filing type
View Full Filing (SEC EDGAR)Mereo BioPharma has signed an option and license agreement with U.S.-based Sentynl Therapeutics, giving Sentynl the U.S. commercial rights and global manufacturing rights to alvelestat for alpha-1 antitrypsin deficiency-associated lung disease (AATD-LD). Mereo will receive a non-refundable option fee upfront, and if Sentynl exercises its option, Mereo could get $40 million in upfront and R&D payments, up to $435 million in milestones, plus double-digit tiered royalties on U.S. sales. Mereo will continue to run the global Phase 3 study and handle regulatory interactions until the study is complete, while both companies collaborate on manufacturing and refining the trial design during the option period.
View Full Filing (SEC EDGAR)Mereo BioPharma Group plc released its Q2 2026 financial results on August 11, 2026, and gave an update on recent corporate developments. The actual numbers and details are in the press release furnished as Exhibit 99.1; the 8-K excerpt itself doesn't contain any figures or specific updates.
View Full Filing (SEC EDGAR)589492107
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,137
Total reported value
$279.7B
Held by 4137 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,136
Total reported value
$649.5B
Held by 4136 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,134
Total reported value
$712.8B
Held by 4134 institutions — one of the most-tracked stocks on AlphaSMO
Access MREO's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MREOCLI
npx alphasmo stocks get MREO