Monte Rosa Therapeutics, Inc.
US ˙ NasdaqGS ˙ US61225M1027

SecurityGLUE / Monte Rosa Therapeutics, Inc.
InstitutionFmr Llc
Latest Disclosed Ownership1,750,731 shares
Ownership 2.80%
Fmr Llc ownership in GLUE / Monte Rosa Therapeutics, Inc.

2025-06-06 - Fmr Llc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 1,750,731 shares of Monte Rosa Therapeutics, Inc. (US:GLUE). This represents 2.8 percent ownership of the company. In their previous filing dated 2024-11-12 , Fmr Llc had reported owning 5,101,413 shares, indicating a decrease of -65.68 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2025-06-06 2025-06-06 13G/A 5,101,413 1,750,731 -65.68 2.80 -66.31
2024-11-12 2024-11-12 13G/A 5,537,239 5,101,413 -7.87 8.31 -24.82
2024-02-09 2024-02-09 13G/A 6,217,458 5,537,239 -10.94 11.06 -13.93
2023-02-09 2023-02-09 13G/A 6,975,887 6,217,458 -10.87 12.85 -14.35
2022-02-09 2022-02-09 13G/A 6,172,277 6,975,887 13.02 15.00 8.12
2021-08-10 2021-08-10 13G 6,172,277 13.87

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 1,024,304 -275,792 -21.21 16,850 -17.35 0.0002
2026-02-17 2025-12-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 1,300,096 -1,512,155 -53.77 20,386 -2.17 0.0010
2025-11-13 2025-09-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 2,812,251 524,217 22.91 20,839 101.94 0.0011
2025-08-14 2025-06-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 2,288,034 -2,386,074 -51.05 10,319 -52.42 0.0006
2025-05-12 2025-03-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 4,674,108 -874,340 -15.76 21,688 -43.68 0.0014
2025-02-13 2024-12-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 5,548,448 447,035 8.76 38,506 42.42 0.0023
2024-11-13 2024-09-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 5,101,413 6,439 0.13 27,037 41.89 0.0016
2024-08-13 2024-06-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 5,094,974 -245,828 -4.60 19,055 -49.39 0.0012
2024-05-13 2024-03-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 5,340,802 -196,437 -3.55 37,653 20.35 0.0025
2024-02-13 2023-12-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 5,537,239 -467,594 -7.79 31,285 8.77 0.0024
2023-11-13 2023-09-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,004,833 -540,899 -8.26 28,763 -35.85 0.0025
2023-08-11 2023-06-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,545,732 124,693 1.94 44,838 -10.36 0.0038
2023-08-11 2023-03-31 13F/A-1 MONTE ROSA THERAPEUTICS COM 61225M102 6,421,039 203,581 3.27 50,020 5.72 0.0046
2023-05-11 2023-03-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,421,039 203,581 50,020 0.0046
2023-02-13 2022-12-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,217,458 12,484 0.20 47,315 -6.67 0.0047
2022-11-10 2022-09-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,204,974 -7,570 -0.12 50,695 -15.61 0.0053
2022-08-12 2022-06-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,212,544 -782,004 -11.18 60,075 -38.74 0.0060
2022-05-13 2022-03-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,994,548 18,661 0.27 98,064 -31.16 0.0078
2022-02-14 2021-12-31 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,975,887 18,603 0.27 142,447 -6.82 0.0105
2022-02-14 2021-09-30 13F/A-1 MONTE ROSA THERAPEUTICS COM 61225M102 6,957,284 2,645,025 61.34 152,879 63.42 0.0121
2021-11-15 2021-09-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 6,957,284 2,645,025 152,879 0.0121
2021-08-13 2021-06-30 13F MONTE ROSA THERAPEUTICS COM 61225M102 4,312,259 4,312,259 93,549 0.0073
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.