Labcorp Holdings Inc.
CH ˙ BRSE
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:LAB / Labcorp Holdings Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership877,428 shares
Latest Disclosed Value $ 220,129,137
Alliancebernstein L.p. reports 17.43% decrease in ownership of LAB / Labcorp Holdings Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 877,428 shares of Labcorp Holdings Inc. (CH:LAB) valued at $220,129,137 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,062,702 shares of Labcorp Holdings Inc.. This represents a change in shares of -17.43% 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)
2026-05-15 2026-03-31 13F LABCORP HOLDINGS COM SHS 504922105 877,428 -185,274 -17.43 220,129 -17.43 0.0713
2026-02-17 2025-12-31 13F LABCORP HOLDINGS COM SHS 504922105 1,062,702 -39,099 -3.55 266,611 -15.70 0.0842
2025-11-14 2025-09-30 13F LABCORP HOLDINGS COM SHS 504922105 1,101,801 -26,523 -2.35 316,283 6.78 0.0996
2025-08-14 2025-06-30 13F LABCORP HOLDINGS COM SHS 504922105 1,128,324 -143,266 -11.27 296,196 0.08 0.0966
2025-05-15 2025-03-31 13F LABCORP HOLDINGS COM SHS 504922105 1,271,590 250,486 24.53 295,950 26.39 0.1071
2025-02-12 2024-12-31 13F LABCORP HOLDINGS COM SHS 504922105 1,021,104 380,624 59.43 234,160 63.59 0.0795
2024-11-14 2024-09-30 13F LABCORP HOLDINGS COM SHS 504922105 640,480 172,479 36.85 143,134 50.28 0.0481
2024-08-14 2024-06-30 13F LABCORP HOLDINGS COM SHS 504922105 468,001 468,001 95,243 0.0332
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.