Soleno Therapeutics, Inc.
US ˙ NasdaqCM ˙ US8342033094
DIESES SYMBOL IST NICHT MEHR AKTIV

SecuritySLNO / Soleno Therapeutics, Inc.
InstitutionCaption Management, LLC
Latest Disclosed Ownership420,143 shares
Latest Disclosed Value $ 14,066,388
Caption Management, LLC ownership in SLNO / Soleno Therapeutics, Inc.

On May 15, 2026 - Caption Management, LLC filed a 13F-HR form disclosing ownership of 420,143 shares of Soleno Therapeutics, Inc. (US:SLNO) valued at $14,066,388 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 42,100 shares of Soleno Therapeutics, Inc.. This represents a change in shares of 897.96% during the quarter. The current value of the position is $22,271,780 USD.

Caption Management, LLC has a history of taking positions in derivatives of the underlying security (SLNO) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 1,169,200 of underlying shares valued at $39,144,816 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.

SLNO / Soleno Therapeutics, 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)
2026-05-15 2026-03-31 13F SOLENO THERAPEUTICS COM 834203309 420,143 378,043 897.96 14,066 621.70 0.0822
2026-02-17 2025-12-31 13F SOLENO THERAPEUTICS COM 834203309 42,100 -327,900 -88.62 1,949 -92.21 0.0134
2025-11-14 2025-09-30 13F SOLENO THERAPEUTICS COM 834203309 370,000 106,713 40.53 25,012 13.39 0.1951
2025-08-14 2025-06-30 13F SOLENO THERAPEUTICS COM 834203309 263,287 -31,713 -10.75 22,058 4.65 0.2441
2025-05-15 2025-03-31 13F SOLENO THERAPEUTICS COM 834203309 295,000 271,852 1,174.41 21,078 1,926.63 0.2027
2025-02-14 2024-12-31 13F SOLENO THERAPEUTICS COM 834203309 23,148 -32,052 -58.07 1,041 -62.68 0.0098
2024-11-14 2024-09-30 13F SOLENO THERAPEUTICS COM 834203309 55,200 -28,526 -34.07 2,787 -18.41 0.0445
2024-08-14 2024-06-30 13F SOLENO THERAPEUTICS COM 834203309 83,726 43,726 109.31 3,416 99.53 0.0526
2024-05-15 2024-03-31 13F SOLENO THERAPEUTICS COM 834203309 40,000 40,000 1,712 0.0260
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 SOLENO THERAPEUTICS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLENO THERAPEUTICS COM Call 50,000 0.00 2,315 -31.51 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLENO THERAPEUTICS COM Call 50,000 -48.51 3,380 -58.45 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLENO THERAPEUTICS COM Call 97,100 -84.54 8,135 -81.87 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLENO THERAPEUTICS COM Call 628,000 -19.10 44,871 28.59 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLENO THERAPEUTICS COM Call 776,300 274.48 34,895 233.40 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLENO THERAPEUTICS COM Call 207,300 10,467 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
(%)
2026-05-15 2026-03-31 13F SOLENO THERAPEUTICS COM Put 1,169,200 241.37 39,145 146.86 n/a n/a n/a
2026-02-17 2025-12-31 13F SOLENO THERAPEUTICS COM Put 342,500 -66.29 15,858 -76.91 n/a n/a n/a
2025-11-14 2025-09-30 13F SOLENO THERAPEUTICS COM Put 1,016,100 79.59 68,688 44.91 n/a n/a n/a
2025-08-14 2025-06-30 13F SOLENO THERAPEUTICS COM Put 565,800 228.76 47,403 285.51 n/a n/a n/a
2025-05-15 2025-03-31 13F SOLENO THERAPEUTICS COM Put 172,100 -60.75 12,297 -37.62 n/a n/a n/a
2025-02-14 2024-12-31 13F SOLENO THERAPEUTICS COM Put 438,500 43,750.00 19,711 39,320.00 n/a n/a n/a
2024-11-14 2024-09-30 13F SOLENO THERAPEUTICS COM Put 1,000 -99.54 50 -99.43 n/a n/a n/a
2024-08-14 2024-06-30 13F SOLENO THERAPEUTICS COM Put 215,200 258.67 8,780 241.90 n/a n/a n/a
2024-05-15 2024-03-31 13F SOLENO THERAPEUTICS COM Put 60,000 200.00 2,568 219.01 n/a n/a n/a
2024-02-14 2023-12-31 13F SOLENO THERAPEUTICS COM Put 20,000 805 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.