코어 연구소 Inc.
US ˙ NYSE ˙ US21867A1051

SecurityCLB / Core Laboratories Inc.
InstitutionQUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series
Latest Disclosed Ownership81,958 shares
Latest Disclosed Value $ 944,156
QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series reports 4.27% increase in ownership of CLB / Core Laboratories Inc.

On August 26, 2025 - QUANTITATIVE MASTER SERIES LLC - Master Small Cap Index Series filed a NPORT-P form disclosing ownership of 81,958 shares of Core Laboratories Inc. (US:CLB) valued at $944,156 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 28, 2025 disclosing 78,602 shares of Core Laboratories Inc.. This represents a change in shares of 4.27% during the quarter. The current value of the position is $1,059,717 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 Core Laboratories EC US21867A1051 81,958 3,356 4.27 944 -19.86 0.0212
2025-05-28 2025-03-31 NP Core Laboratories EC US21867A1051 78,602 -2,424 -2.99 1,178 -15.98 0.0283
2025-02-25 2024-12-31 NP Core Laboratories EC US21867A1051 81,026 -11,978 -12.88 1,403 -18.63 0.0306
2024-11-26 2024-09-30 NP Core Laboratories EC US21867A1051 93,004 2,957 3.28 1,723 -5.69 0.0326
2024-08-26 2024-06-30 NP Core Laboratories EC US21867A1051 90,047 7,233 8.73 1,827 29.21 0.0372
2024-05-28 2024-03-31 NP Core Laboratories EC US21867A1051 82,814 -2,906 -3.39 1,414 -6.54 0.0295
2024-02-26 2023-12-31 NP Core Laboratories EC US21867A1051 85,720 6,086 7.64 1,514 -20.87 0.0323
2023-11-28 2023-09-30 NP Core Laboratories EC US21867A1051 79,634 -803 -1.00 1,912 2.25 0.0499
2023-08-25 2023-06-30 NP Core Laboratories EC US21867A1051 80,437 80,437 1,870 0.0444
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.