Labcorp Holdings Inc.
CH ˙ BRSE
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityCH:LAB / Labcorp Holdings Inc.
InstitutionBnp Paribas Arbitrage, Sa
Latest Disclosed Ownership188,616 shares
Latest Disclosed Value $ 50,324,635
Bnp Paribas Arbitrage, Sa ownership in LAB / Labcorp Holdings Inc.

On May 12, 2026 - Bnp Paribas Arbitrage, Sa filed a 13F-HR form disclosing ownership of 188,616 shares of Labcorp Holdings Inc. (CH:LAB) valued at $50,324,635 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 253,352 shares of Labcorp Holdings Inc.. This represents a change in shares of -25.55% during the quarter.

Bnp Paribas Arbitrage, Sa has a history of taking positions in derivatives of the underlying security (LAB) in the form of stock options. The firm currently holds call options representing 100 of underlying shares valued at $2,668,100 USD and put options representing 130 of underlying shares valued at $3,468,530 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CH:LAB / Labcorp Holdings Inc. Historical Put/Call Ratio
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)
2026-05-12 2026-03-31 13F Labcorp Holdings Equity 504922105 188,616 -64,736 -25.55 50,325 -20.82 0.0245
2026-02-10 2025-12-31 13F Labcorp Holdings Equity 504922105 253,352 140,869 125.24 63,561 96.85 0.0288
2025-11-13 2025-09-30 13F Labcorp Holdings Equity 504922105 112,483 -93,637 -45.43 32,289 -40.32 0.0172
2025-08-14 2025-06-30 13F Labcorp Holdings Equity 504922105 206,120 -11,872 -5.45 54,109 6.65 0.0310
2025-05-14 2025-03-31 13F Labcorp Holdings Equity 504922105 217,992 46,513 27.12 50,735 29.02 0.0298
2025-02-14 2024-12-31 13F Labcorp Holdings Equity 504922105 171,479 44,702 35.26 39,324 38.79 0.0220
2024-11-13 2024-09-30 13F Labcorp Holdings Equity 504922105 126,777 -65,035 -33.91 28,332 -27.42 0.0190
2024-08-13 2024-06-30 13F Labcorp Holdings Equity 504922105 191,812 191,812 39,036 0.0318
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-12 2026-03-31 13F Labcorp Holdings Option Call 100 2,668 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-12 2026-03-31 13F Labcorp Holdings Option Put 130 3,469 n/a n/a n/a
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.