Labcorp Holdings Inc.
CH ˙ BRSE
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:LAB / Labcorp Holdings Inc.
InstitutionLord, Abbett & Co. Llc
Latest Disclosed Ownership585,844 shares
Latest Disclosed Value $ 156,309
Lord, Abbett & Co. Llc reports 7.34% decrease in ownership of LAB / Labcorp Holdings Inc.

On May 14, 2026 - Lord, Abbett & Co. Llc filed a 13F-HR form disclosing ownership of 585,844 shares of Labcorp Holdings Inc. (CH:LAB) valued at $156,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 632,262 shares of Labcorp Holdings Inc.. This represents a change in shares of -7.34% during the quarter.

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)
2026-05-14 2026-03-31 13F LABCORP HOLDINGS COM 504922105 585,844 -46,418 -7.34 156 -1.27 0.5103
2026-02-13 2025-12-31 13F LABCORP HOLDINGS COM 504922105 632,262 -96,636 -13.26 159 -24.40 0.4866
2025-11-13 2025-09-30 13F LABCORP HOLDINGS COM 504922105 728,898 -8,423 -1.14 209 8.29 0.6229
2025-08-14 2025-06-30 13F LABCORP HOLDINGS COM 504922105 737,321 -43,890 -5.62 194 6.63 0.6227
2025-05-13 2025-03-31 13F LABCORP HOLDINGS COM 504922105 781,211 280,011 55.87 182 58.77 0.6477
2025-02-14 2024-12-31 13F LABCORP HOLDINGS INC COM SHS COM 504922105 501,200 -126,638 -20.17 115 -18.57 0.3635
2024-12-13 2024-09-30 13F/A-1 Labcorp Holdings COM 504922105 627,838 -17,477 -2.71 140 6.87 0.4465
2024-11-14 2024-09-30 13F Labcorp Holdings COM 504922105 627,838 -17,477 140 0.4523
2024-10-07 2024-06-30 13F/A-1 Labcorp Holdings COM 504922105 645,315 645,315 131 0.4296
2024-08-14 2024-06-30 13F Labcorp Holdings COM 504922105 645,315 645,315 131 0.4386
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.