Beam Therapeutics Inc.
US ˙ NasdaqGS ˙ US07373V1052

SecurityBEAM / Beam Therapeutics Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership165,654 shares
Latest Disclosed Value $ 2,817,774
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 6.28% increase in ownership of BEAM / Beam Therapeutics Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 165,654 shares of Beam Therapeutics Inc. (US:BEAM) valued at $2,817,775 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 155,859 shares of Beam Therapeutics Inc.. This represents a change in shares of 6.28% during the quarter. The current value of the position is $5,440,077 USD.

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)
2025-08-26 2025-06-30 NP Beam Therapeutics EC US07373V1052 165,654 9,795 6.28 2,818 -7.43 0.0633
2025-05-28 2025-03-31 NP Beam Therapeutics EC US07373V1052 155,859 26,940 20.90 3,044 -4.82 0.0730
2025-02-25 2024-12-31 NP Beam Therapeutics EC US07373V1052 128,919 -22,521 -14.87 3,197 -13.83 0.0698
2024-11-26 2024-09-30 NP Beam Therapeutics EC US07373V1052 151,440 10,250 7.26 3,710 12.15 0.0702
2024-08-26 2024-06-30 NP Beam Therapeutics EC US07373V1052 141,190 13,947 10.96 3,308 -21.31 0.0674
2024-05-28 2024-03-31 NP Beam Therapeutics EC US07373V1052 127,243 0 0.00 4,204 21.40 0.0877
2024-02-26 2023-12-31 NP Beam Therapeutics EC US07373V1052 127,243 8,966 7.58 3,464 21.77 0.0739
2023-11-28 2023-09-30 NP Beam Therapeutics EC US07373V1052 118,277 -177 -0.15 2,845 -24.80 0.0742
2023-08-25 2023-06-30 NP Beam Therapeutics EC US07373V1052 118,454 16,381 16.05 3,782 21.02 0.0897
2023-05-26 2023-03-31 NP Beam Therapeutics EC US07373V1052 102,073 1,799 1.79 3,125 -20.30 0.0832
2023-02-24 2022-12-31 NP Beam Therapeutics EC US07373V1052 100,274 -2,730 -2.65 3,922 -20.09 0.1079
2022-11-25 2022-09-30 NP Beam Therapeutics EC US07373V1052 103,004 4,817 4.91 4,907 29.13 0.1406
2022-08-25 2022-06-30 NP Beam Therapeutics EC US07373V1052 98,187 18,618 23.40 3,801 -16.65 0.1050
2022-05-26 2022-03-31 NP Beam Therapeutics EC US07373V1052 79,569 1,160 1.48 4,559 -27.03 0.1062
2022-02-25 2021-12-31 NP Beam Therapeutics EC US07373V1052 78,409 2,506 3.30 6,248 -5.39 0.1355
2021-11-24 2021-09-30 NP Beam Therapeutics EC US07373V1052 75,903 4,923 6.94 6,604 -27.71 0.1455
2021-08-26 2021-06-30 NP Beam Therapeutics EC US07373V1052 70,980 10,355 17.08 9,136 88.27 0.1960
2021-05-27 2021-03-31 NP Beam Therapeutics EC US07373V1052 60,625 -1,742 -2.79 4,852 -4.69 0.1100
2021-02-25 2020-12-31 NP Beam Therapeutics EC US07373V1052 62,367 4,877 8.48 5,092 259.79 0.1305
2020-11-25 2020-09-30 NP Beam Therapeutics EC US07373V1052 57,490 36,920 179.48 1,415 146.09 0.0454
2020-08-27 2020-06-30 NP Beam Therapeutics EC US07373V1052 20,570 858 4.35 576 62.43 0.0188
2020-06-01 2020-03-31 NP Beam Therapeutics EC US07373V1052 19,712 19,712 355 0.0145
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.