核心實驗室公司
US ˙ NYSE ˙ US21867A1051

SecurityCLB / Core Laboratories Inc.
InstitutionCwm, Llc
Latest Disclosed Ownership2,535 shares
Latest Disclosed Value $ 42,563
Cwm, Llc reports 0.76% increase in ownership of CLB / Core Laboratories Inc.

On May 14, 2026 - Cwm, Llc filed a 13F-HR form disclosing ownership of 2,535 shares of Core Laboratories Inc. (US:CLB) valued at $42,563 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 2,516 shares of Core Laboratories Inc.. The current value of the position is $32,828 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F CORE LABORATORIES COM 21867A105 2,535 19 0.76 43 0.0001
2026-01-26 2025-12-31 13F CORE LABORATORIES COM 21867A105 2,516 668 36.15 0 0.0001
2025-10-15 2025-09-30 13F CORE LABORATORIES COM 21867A105 1,848 1,351 271.83 0 0.0001
2025-07-25 2025-06-30 13F CORE LABORATORIES COM 21867A105 497 -1,561 -75.85 0 0.0000
2025-05-01 2025-03-31 13F CORE LABORATORIES COM 21867A105 2,058 -1,754 -46.01 0 0.0001
2025-02-04 2024-12-31 13F CORE LABORATORIES COM 21867A105 3,812 102 2.75 0 0.0003
2024-10-08 2024-09-30 13F CORE LABORATORIES COM 21867A105 3,710 61 1.67 0 0.0003
2024-07-10 2024-06-30 13F CORE LABORATORIES COM 21867A105 3,649 69 1.93 0 0.0003
2024-04-05 2024-03-31 13F CORE LABORATORIES COM 21867A105 3,580 3,300 1,178.57 0 0.0003
2024-02-01 2023-12-31 13F CORE LABORATORIES COM 21867A105 280 -153 -35.33 0 0.0000
2023-10-11 2023-09-30 13F CORE LABORATORIES COM 21867A105 433 15 3.59 0 0.0001
2023-08-03 2023-06-30 13F CORE LABORATORIES COM 21867A105 418 30 7.73 0 0.0001
2023-05-01 2023-03-31 13F CORE LABORATORIES N V COM N22717107 388 215 124.28 0 0.0001
2023-02-01 2022-12-31 13F CORE LABORATORIES N V COM N22717107 173 144 496.55 0 0.0000
2022-10-27 2022-09-30 13F CORE LABORATORIES N V COM N22717107 29 -96 -76.80 0 -100.00
2022-07-28 2022-06-30 13F CORE LABORATORIES N V COM N22717107 125 125 2 0.0000
2022-01-31 2021-12-31 13F CORE LABORATORIES N V COM N22717107 0 -77 -100.00 0 -100.00
2021-09-15 2021-06-30 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2021-07-29 2021-06-30 13F CORE LABORATORIES N V COM N22717107 77 0 3 0.0000
2021-09-15 2021-03-31 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2021-04-27 2021-03-31 13F CORE LABORATORIES N V COM N22717107 27 -50 1 0.0000
2021-09-15 2020-12-31 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2021-01-27 2020-12-31 13F CORE LABORATORIES N V COM N22717107 27 -50 1 0.0000
2021-09-15 2020-09-30 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2020-10-19 2020-09-30 13F CORE LABORATORIES N V COM N22717107 27 -50 0
2021-09-15 2020-06-30 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2020-07-22 2020-06-30 13F CORE LABORATORIES N V COM N22717107 27 -50 1 0.0000
2021-09-15 2020-03-31 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2020-04-28 2020-03-31 13F CORE LABORATORIES N V COM N22717107 27 -50 0
2021-09-14 2019-12-31 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2020-01-27 2019-12-31 13F CORE LABORATORIES N V COM N22717107 27 -50 1 0.0000
2021-09-14 2019-09-30 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2019-10-22 2019-09-30 13F CORE LABORATORIES N V COM N22717107 27 -50 1 0.0000
2021-09-14 2019-06-30 13F/A-1 CORE LABORATORIES N V COM N22717107 77 0 0.00 3 0.00 0.0000
2019-07-31 2019-06-30 13F CORE LABORATORIES N V COM N22717107 70 -7 4 0.0001
2021-09-02 2019-03-31 13F/A-1 CORE LABORATORIES N V COM N22717107 77 28 57.14 3 0.00 0.0000
2019-04-22 2019-03-31 13F CORE LABORATORIES N V COM N22717107 70 21 5 0.0001
2019-01-25 2018-12-31 13F CORE LABORATORIES N V COM N22717107 49 4 8.89 3 -40.00 0.0001
2018-10-29 2018-09-30 13F CORE LABORATORIES N V COM N22717107 45 18 66.67 5 66.67 0.0001
2018-07-31 2018-06-30 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0001
2018-04-26 2018-03-31 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0001
2018-01-16 2017-12-31 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0001
2017-10-16 2017-09-30 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0001
2017-07-17 2017-06-30 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0002
2017-04-17 2017-03-31 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0002
2017-01-19 2016-12-31 13F CORE LABORATORIES N V COM N22717107 27 0 0.00 3 0.00 0.0002
2016-10-17 2016-09-30 13F CORE LABORATORIES N V COM N22717107 27 -6 -18.18 3 -25.00 0.0002
2016-07-21 2016-06-30 13F CORE LABORATORIES N V COM N22717107 33 -4,222 -99.22 4 -99.16 0.0003
2016-04-18 2016-03-31 13F CORE LABORATORIES N V COM N22717107 4,255 1,289 43.46 478 47.99 0.0420
2016-02-01 2015-12-31 13F CORE LABORATORIES N V COM N22717107 2,966 827 38.66 323 51.64 0.0316
2015-10-30 2015-09-30 13F CORE LABORATORIES N V COM N22717107 2,139 263 14.02 213 -0.47 0.0214
2015-07-09 2015-06-30 13F CORE LABORATORIES N V COM N22717107 1,876 -18,283 -90.69 214 -89.84 0.0205
2015-04-30 2015-03-31 13F CORE LABORATORIES N V COM N22717107 20,159 4,405 27.96 2,106 11.08 0.2133
2015-02-12 2014-12-31 13F CORE LABORATORIES N V COM N22717107 15,754 3,767 31.43 1,896 8.10 0.2301
2014-11-14 2014-09-30 13F CORE LABORATORIES N V COM N22717107 11,987 1,680 16.30 1,754 1.86 0.2547
2014-08-14 2014-06-30 13F CORE LABORATORIES N V COM N22717107 10,307 2,966 40.40 1,722 18.19 0.3081
2014-05-16 2014-03-31 13F CORE LABORATORIES N V COM N22717107 7,341 1,851 33.72 1,457 39.03 0.1986
2014-02-14 2013-12-31 13F CORE LABORATORIES N V COM N22717107 5,490 1,352 32.67 1,048 49.71 0.1635
2013-11-14 2013-09-30 13F CORE LABORATORIES N V COM N22717107 4,138 4,138 700 0.1837
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.