Alector, Inc.
US ˙ NasdaqGS ˙ US0144421072

SecurityALEC / Alector, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership4,331,322 shares
Ownership 4.50%
Morgan Stanley ownership in ALEC / Alector, Inc.

2024-11-07 - Morgan Stanley has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 4,331,322 shares of Alector, Inc. (US:ALEC). This represents 4.5 percent ownership of the company. In their previous filing dated 2024-02-12 , Morgan Stanley had reported owning 4,605,044 shares, indicating a decrease of -5.94 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)
2024-11-07 2024-11-07 13G/A 4,605,044 4,331,322 -5.94 4.50 -18.18
2024-02-12 2024-02-12 13G 4,605,044 5.50

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 ALECTOR COM 014442107 364,567 45,495 14.26 784 57.55 0.0000
2026-05-27 2025-12-31 13F/A-1 ALECTOR COM 014442107 319,072 -115,096 -26.51 498 -61.32 0.0000
2026-02-13 2025-12-31 13F ALECTOR COM 014442107 319,072 -115,096 498 0.0000
2026-05-27 2025-09-30 13F/A-1 ALECTOR COM 014442107 434,168 -172,384 -28.42 1,285 51.35 0.0001
2025-11-14 2025-09-30 13F ALECTOR COM 014442107 434,168 -172,384 1,285 0.0001
2025-08-15 2025-06-30 13F ALECTOR COM 014442107 606,552 259,845 74.95 849 99.30 0.0001
2025-05-15 2025-03-31 13F ALECTOR COM 014442107 346,707 -303,834 -46.70 426 -65.34 0.0000
2025-05-15 2024-12-31 13F/A-1 ALECTOR COM 014442107 650,541 -3,705,229 -85.06 1,230 -93.94 0.0001
2025-02-14 2024-12-31 13F ALECTOR COM 014442107 650,541 -3,705,229 1,230 0.0001
2025-05-14 2024-09-30 13F/A-2 ALECTOR COM 014442107 4,355,770 1,350,697 44.95 20,298 48.77 0.0015
2025-02-14 2024-09-30 13F/A-1 ALECTOR COM 014442107 4,355,770 1,350,697 20,298 0.0015
2024-11-14 2024-09-30 13F ALECTOR COM 014442107 4,355,770 1,350,697 20,298 0.0002
2025-05-14 2024-06-30 13F/A-2 ALECTOR COM 014442107 3,005,073 -299,903 -9.07 13,643 -31.42 0.0011
2024-10-17 2024-06-30 13F/A-1 ALECTOR COM 014442107 3,005,073 -299,903 13,643 0.0011
2024-08-14 2024-06-30 13F ALECTOR COM 014442107 3,005,073 -299,903 13,643 0.0011
2024-10-17 2024-03-31 13F/A-2 ALECTOR COM 014442107 3,304,976 -1,345,215 -28.93 19,896 -46.39 0.0016
2024-08-16 2024-03-31 13F/A-1 ALECTOR COM 014442107 3,304,976 -1,345,215 19,896 0.0016
2024-05-15 2024-03-31 13F ALECTOR COM 014442107 3,304,976 -1,345,215 19,896 0.0016
2024-08-16 2023-12-31 13F/A-1 ALECTOR COM 014442107 4,650,191 1,312,805 39.34 37,109 71.59 0.0033
2024-02-13 2023-12-31 13F ALECTOR COM 014442107 4,650,191 1,312,805 37,109 0.0033
2023-11-15 2023-09-30 13F ALECTOR COM 014442107 3,337,386 1,605,293 92.68 21,626 107.76 0.0022
2023-08-14 2023-06-30 13F ALECTOR COM 014442107 1,732,093 1,283,131 285.80 10,410 274.56 0.0010
2023-05-15 2023-03-31 13F ALECTOR COM 014442107 448,962 -145,998 -24.54 2,779 -49.39 0.0003
2023-02-14 2022-12-31 13F ALECTOR COM 014442107 594,960 23,277 4.07 5,491 1.55 0.0006
2022-11-14 2022-09-30 13F ALECTOR COM 014442107 571,683 -242,189 -29.76 5,407 -34.61 0.0007
2022-10-27 2022-06-30 13F/A-1 ALECTOR COM 014442107 813,872 197,256 31.99 8,269 -5.88 0.0011
2022-08-15 2022-06-30 13F ALECTOR COM 014442107 813,872 197,256 8,269 0.0002
2022-10-27 2022-03-31 13F/A-1 ALECTOR COM 014442107 616,616 -1,321,644 -68.19 8,786 -78.05 0.0012
2022-05-13 2022-03-31 13F ALECTOR COM 014442107 616,616 -1,321,644 8,786 0.0012
2022-02-14 2021-12-31 13F ALECTOR COM 014442107 1,938,260 1,133,000 140.70 40,025 117.81 0.0049
2021-11-15 2021-09-30 13F ALECTOR COM 014442107 805,260 201,699 33.42 18,376 46.18 0.0025
2021-08-23 2021-06-30 13F/A-1 ALECTOR COM 014442107 603,561 -344,903 -36.36 12,571 -34.19 0.0017
2021-08-16 2021-06-30 13F ALECTOR COM 014442107 603,561 -344,903 12,571 0.0003
2021-05-17 2021-03-31 13F ALECTOR COM 014442107 948,464 845,333 819.67 19,102 1,123.70 0.0028
2021-02-16 2020-12-31 13F ALECTOR COM 014442107 103,131 -79,254 -43.45 1,561 -18.74 0.0002
2020-11-13 2020-09-30 13F ALECTOR COM 014442107 182,385 112,380 160.53 1,921 12.27 0.0004
2020-08-14 2020-06-30 13F ALECTOR COM 014442107 70,005 21,766 45.12 1,711 46.99 0.0004
2020-05-26 2020-03-31 13F/A-1 ALECTOR COM 014442107 48,239 -15,794 -24.67 1,164 5.43 0.0003
2020-05-15 2020-03-31 13F ALECTOR COM 014442107 48,239 -15,794 1,164 89.4195
2020-02-14 2019-12-31 13F ALECTOR COM 014442107 64,033 37,573 142.00 1,104 189.76 0.0003
2019-11-14 2019-09-30 13F ALECTOR COM 014442107 26,460 25,234 2,058.24 381 1,487.50 0.0001
2019-08-14 2019-06-30 13F ALECTOR COM 014442107 1,226 -720 -37.00 24 -33.33 0.0000
2019-05-15 2019-03-31 13F ALECTOR COM 014442107 1,946 1,946 36 0.0000
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.