Vertiv Holdings Co
MX ˙ BMV ˙ US92537N1081
SecurityMX:VRT / Vertiv Holdings Co
InstitutionCastleKnight Management LP
Latest Disclosed Ownership29,500 shares
Latest Disclosed Value $ 7,392,110
CastleKnight Management LP ownership in VRT / Vertiv Holdings Co

On May 15, 2026 - CastleKnight Management LP filed a 13F-HR form disclosing ownership of 29,500 shares of Vertiv Holdings Co (MX:VRT) valued at $7,392,110 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 274,700 shares of Vertiv Holdings Co. This represents a change in shares of -89.26% during the quarter.

CastleKnight Management LP has a history of taking positions in derivatives of the underlying security (VRT) in the form of stock options. The firm currently holds call options representing 140,000 of underlying shares valued at $35,081,200 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.

MX:VRT / Vertiv Holdings Co 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)
2026-05-15 2026-03-31 13F VERTIV HOLDINGS COM CL A 92537N108 29,500 -245,200 -89.26 7,392 -83.39 0.1232
2026-02-17 2025-12-31 13F VERTIV HOLDINGS COM CL A 92537N108 274,700 -32,000 -10.43 44,504 -3.81 0.9858
2025-11-14 2025-09-30 13F VERTIV HOLDINGS COM CL A 92537N108 306,700 -11,700 -3.67 46,269 13.17 0.9116
2025-08-14 2025-06-30 13F VERTIV HOLDINGS COM CL A 92537N108 318,400 -78,200 -19.72 40,886 42.78 1.1549
2025-05-15 2025-03-31 13F VERTIV HOLDINGS COM CL A 92537N108 396,600 240,300 153.74 28,635 61.25 1.1240
2025-02-14 2024-12-31 13F VERTIV HOLDINGS COM CL A 92537N108 156,300 -87,500 -35.89 17,757 -26.79 0.5187
2024-11-14 2024-09-30 13F VERTIV HOLDINGS COM CL A 92537N108 243,800 42,000 20.81 24,256 38.85 0.9995
2024-08-14 2024-06-30 13F VERTIV HOLDINGS COM CL A 92537N108 201,800 -14,900 -6.88 17,470 -1.29 0.8675
2024-05-15 2024-03-31 13F VERTIV HOLDINGS COM CL A 92537N108 216,700 -137,000 -38.73 17,698 4.17 1.0559
2024-02-14 2023-12-31 13F VERTIV HOLDINGS COM CL A 92537N108 353,700 -37,611 -9.61 16,988 16.71 0.8962
2023-11-14 2023-09-30 13F VERTIV HOLDINGS COM CL A 92537N108 391,311 161,211 70.06 14,557 155.41 0.9552
2023-08-14 2023-06-30 13F VERTIV HOLDINGS COM CL A 92537N108 230,100 230,100 5,700 0.5985
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
(%)
2026-05-15 2026-03-31 13F VERTIV HOLDINGS COM CL A Call 140,000 -17.65 35,081 27.38 n/a n/a n/a
2026-02-17 2025-12-31 13F VERTIV HOLDINGS COM CL A Call 170,000 -69.09 27,542 -66.81 n/a n/a n/a
2025-11-14 2025-09-30 13F VERTIV HOLDINGS COM CL A Call 550,000 83.33 82,973 115.39 n/a n/a n/a
2025-08-14 2025-06-30 13F VERTIV HOLDINGS COM CL A Call 300,000 7.14 38,523 90.56 n/a n/a n/a
2025-05-15 2025-03-31 13F VERTIV HOLDINGS COM CL A Call 280,000 -26.32 20,216 -53.17 n/a n/a n/a
2025-02-14 2024-12-31 13F VERTIV HOLDINGS COM CL A Call 380,000 8.57 43,172 23.98 n/a n/a n/a
2024-11-14 2024-09-30 13F VERTIV HOLDINGS COM CL A Call 350,000 16.67 34,822 34.08 n/a n/a n/a
2024-08-14 2024-06-30 13F VERTIV HOLDINGS COM CL A Call 300,000 62.16 25,971 71.90 n/a n/a n/a
2024-05-15 2024-03-31 13F VERTIV HOLDINGS COM CL A Call 185,000 15.62 15,109 96.62 n/a n/a n/a
2024-02-14 2023-12-31 13F VERTIV HOLDINGS COM CL A Call 160,000 -28.89 7,685 -8.20 n/a n/a n/a
2023-11-14 2023-09-30 13F VERTIV HOLDINGS COM CL A Call 225,000 73.08 8,370 159.94 n/a n/a n/a
2023-08-14 2023-06-30 13F VERTIV HOLDINGS COM CL A Call 130,000 3,220 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.