核心實驗室公司
US ˙ NYSE ˙ US21867A1051

SecurityCLB / Core Laboratories Inc.
InstitutionFifth Third Bancorp
Latest Disclosed Ownership11,414 shares
Latest Disclosed Value $ 191,637
Fifth Third Bancorp reports 2,397.59% increase in ownership of CLB / Core Laboratories Inc.

On May 1, 2026 - Fifth Third Bancorp filed a 13F-HR form disclosing ownership of 11,414 shares of Core Laboratories Inc. (US:CLB) valued at $191,641 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 457 shares of Core Laboratories Inc.. This represents a change in shares of 2,397.59% during the quarter. The current value of the position is $155,915 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)
2026-05-01 2026-03-31 13F CORE LABORATORIES COM 21867A105 11,414 10,957 2,397.59 192 2,628.57 0.0004
2026-02-02 2025-12-31 13F CORE LABORATORIES COM 21867A105 457 15 3.39 7 40.00 0.0000
2025-11-07 2025-09-30 13F CORE LABORATORIES COM 21867A105 442 344 351.02 5 400.00 0.0000
2025-07-15 2025-06-30 13F CORE LABORATORIES COM 21867A105 98 -327 -76.94 1 -83.33 0.0000
2025-04-15 2025-03-31 13F CORE LABORATORIES COM 21867A105 425 -474 -52.73 6 -60.00 0.0000
2025-01-21 2024-12-31 13F CORE LABORATORIES COM 21867A105 899 40 4.66 16 0.00 0.0001
2024-10-17 2024-09-30 13F CORE LABORATORIES COM 21867A105 859 45 5.53 16 -6.25 0.0001
2024-07-22 2024-06-30 13F CORE LABORATORIES COM 21867A105 814 44 5.71 17 23.08 0.0001
2024-04-23 2024-03-31 13F CORE LABORATORIES COM 21867A105 770 131 20.50 13 18.18 0.0001
2024-01-19 2023-12-31 13F CORE LABORATORIES COM 21867A105 639 -139 -17.87 11 -38.89 0.0000
2023-10-31 2023-09-30 13F CORE LABORATORIES COM 21867A105 778 -732 -48.48 19 -48.57 0.0001
2023-07-26 2023-06-30 13F CORE LABORATORIES COM 21867A105 1,510 -348 -18.73 35 -12.50 0.0002
2023-04-24 2023-03-31 13F CORE LABORATORIES N V COM N22717107 1,858 1,424 328.11 41 400.00 0.0002
2023-01-25 2022-12-31 13F CORE LABORATORIES N V COM N22717107 434 44 11.28 9 60.00 0.0000
2022-10-25 2022-09-30 13F CORE LABORATORIES N V COM N22717107 390 186 91.18 5 25.00 0.0000
2022-08-04 2022-06-30 13F CORE LABORATORIES N V COM N22717107 204 0 0.00 4 -33.33 0.0000
2022-04-19 2022-03-31 13F CORE LABORATORIES N V COM N22717107 204 -40 -16.39 6 20.00 0.0000
2022-02-01 2021-12-31 13F CORE LABORATORIES N V COM N22717107 244 23 10.41 5 -16.67 0.0000
2021-10-15 2021-09-30 13F CORE LABORATORIES N V COM N22717107 221 69 45.39 6 0.00 0.0000
2021-08-06 2021-06-30 13F CORE LABORATORIES N V COM N22717107 152 0 0.00 6 50.00 0.0000
2021-05-07 2021-03-31 13F CORE LABORATORIES N V COM N22717107 152 112 280.00 4 300.00 0.0000
2021-02-16 2020-12-31 13F CORE LABORATORIES N V COM N22717107 40 -75 -65.22 1 -50.00 0.0000
2020-11-09 2020-09-30 13F CORE LABORATORIES N V COM N22717107 115 115 2 0.0000
2019-11-14 2019-09-30 13F CORE LABORATORIES N V COM N22717107 0 -25 -100.00 0 -100.00
2019-08-07 2019-06-30 13F CORE LABORATORIES N V COM N22717107 25 25 1 0.0000
2019-05-14 2019-03-31 13F CORE LABORATORIES N V COM N22717107 0 -81 -100.00 0 -100.00
2019-02-14 2018-12-31 13F CORE LABORATORIES N V COM N22717107 81 81 5 0.0000
2018-08-14 2018-06-30 13F CORE LABORATORIES N V COM N22717107 0 -750 -100.00 0 -100.00
2018-05-15 2018-03-31 13F CORE LABORATORIES N V COM N22717107 750 100 15.38 81 14.08 0.0006
2018-02-14 2017-12-31 13F CORE LABORATORIES N V COM N22717107 650 -66 -9.22 71 0.00 0.0005
2017-11-14 2017-09-30 13F CORE LABORATORIES N V COM N22717107 716 71 11.01 71 9.23 0.0005
2017-08-11 2017-06-30 13F CORE LABORATORIES N V COM N22717107 645 -200 -23.67 65 -33.67 0.0005
2017-05-12 2017-03-31 13F CORE LABORATORIES N V COM N22717107 845 11 1.32 98 -2.00 0.0007
2017-02-13 2016-12-31 13F/A-1 CORE LABORATORIES N V COM N22717107 834 34 4.25 100 11.11 0.0008
2017-02-09 2016-12-31 13F CORE LABORATORIES N V COM N22717107 800 0 90 0.0007
2016-11-10 2016-09-30 13F CORE LABORATORIES N V COM N22717107 800 -366 -31.39 90 -37.50 0.0007
2016-08-11 2016-06-30 13F CORE LABORATORIES N V COM N22717107 1,166 155 15.33 144 26.32 0.0012
2016-05-13 2016-03-31 13F CORE LABORATORIES N V COM N22717107 1,011 211 26.38 114 31.03 0.0010
2016-02-16 2015-12-31 13F CORE LABORATORIES N V COM N22717107 800 774 2,976.92 87 2,800.00 0.0008
2015-11-13 2015-09-30 13F CORE LABORATORIES N V COM N22717107 26 -544 -95.44 3 -95.38 0.0000
2015-08-14 2015-06-30 13F CORE LABORATORIES N V COM N22717107 570 560 5,600.00 65 6,400.00 0.0006
2015-05-14 2015-03-31 13F CORE LABORATORIES N V COM N22717107 10 -17 -62.96 1 -66.67 0.0000
2015-02-13 2014-12-31 13F CORE LABORATORIES N V COM N22717107 27 2 8.00 3 -25.00 0.0000
2014-11-17 2014-09-30 13F CORE LABORATORIES N V COM N22717107 25 11 78.57 4 100.00 0.0000
2014-08-14 2014-06-30 13F CORE LABORATORIES N V COM N22717107 14 -3,334 -99.58 2 -99.70 0.0000
2014-05-15 2014-03-31 13F CORE LABORATORIES N V COM N22717107 3,348 1,928 135.77 664 145.02 0.0062
2014-02-14 2013-12-31 13F CORE LABORATORIES N V COM N22717107 1,420 1,121 374.92 271 431.37 0.0026
2013-11-14 2013-09-30 13F CORE LABORATORIES N V COM N22717107 299 299 51 0.0005
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.