ASP Isotopes Inc.
DE ˙ DB ˙ US00218A1051
SecurityDE:W62 / ASP Isotopes Inc.
InstitutionBarclays Plc
Latest Disclosed Ownership506,788 shares
Latest Disclosed Value $ 2,711,316
Barclays Plc ownership in W62 / ASP Isotopes Inc.

On February 13, 2026 - Barclays Plc filed a 13F-HR form disclosing ownership of 506,788 shares of ASP Isotopes Inc. (DE:W62) valued at $2,711,316 USD as of December 31, 2025. The entity filed a previous 13F-HR/A on March 31, 2026 disclosing 232,364 shares of ASP Isotopes Inc.. This represents a change in shares of 118.10% during the quarter.

Barclays Plc has a history of taking positions in derivatives of the underlying security (W62) in the form of stock options.

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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

DE:W62 / ASP Isotopes 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)
2026-02-13 2025-12-31 13F ASP ISOTOPES COM 00218A105 506,788 274,424 118.10 2,711 21.30 0.0007
2026-03-31 2025-09-30 13F/A-3 ASP ISOTOPES COM 00218A105 232,364 56,416 32.06 2,235 72.72 0.0005
2026-03-19 2025-09-30 13F/A-2 ASP ISOTOPES COM 00218A105 72,330 -103,618 201 0.0001
2025-11-12 2025-09-30 13F ASP ISOTOPES COM 00218A105 232,364 56,416 2,235 0.0005
2026-02-27 2025-06-30 13F/A-2 ASP ISOTOPES COM 00218A105 175,948 91,407 108.12 1,295 226.77 0.0003
2025-08-14 2025-06-30 13F/A-1 ASP ISOTOPES COM 00218A105 175,948 91,407 1 0.0003
2025-08-13 2025-06-30 13F ASP ISOTOPES COM 00218A105 175,948 91,407 1 0.0001
2026-03-17 2025-03-31 13F/A-1 ASP ISOTOPES COM 00218A105 84,541 -23,416 -21.69 396 -19.02 0.0001
2025-05-15 2025-03-31 13F ASP ISOTOPES COM 00218A105 84,541 -23,416 0 0.0001
2026-03-19 2024-12-31 13F/A-1 ASP ISOTOPES COM 00218A105 107,957 35,627 49.26 489 143.28 0.0001
2025-02-13 2024-12-31 13F ASP ISOTOPES COM 00218A105 107,957 35,627 0 0.0001
2026-03-31 2024-09-30 13F/A-2 ASP ISOTOPES COM 00218A105 72,330 58,897 438.45 201 390.24 0.0001
2024-11-19 2024-09-30 13F/A-1 ASP ISOTOPES COM 00218A105 72,330 58,897 0 0.0001
2024-11-15 2024-09-30 13F ASP ISOTOPES COM 00218A105 72,330 58,897 0 0.0000
2026-03-23 2024-06-30 13F/A-1 ASP ISOTOPES COM 00218A105 13,433 13,433 41 0.0000
2024-08-14 2024-06-30 13F ASP ISOTOPES COM 00218A105 13,433 13,433 0 0.0000
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
(%)
2026-02-13 2025-12-31 13F ASP ISOTOPES OPT Put 100,000 0.00 535 -44.39 n/a n/a n/a
2026-03-31 2025-09-30 13F/A ASP ISOTOPES OPT Put 100,000 0.00 962 30.71 n/a n/a n/a
2025-11-12 2025-09-30 13F ASP ISOTOPES OPT Put 100,000 962 n/a n/a n/a
2025-08-14 2025-06-30 13F/A ASP ISOTOPES OPT Put 100,000 1 n/a n/a n/a
2026-02-27 2025-06-30 13F/A ASP ISOTOPES OPT Put 100,000 736 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.