Apellis Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US03753U1060
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecurityAPLS / Apellis Pharmaceuticals, Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership3,290 shares
Latest Disclosed Value $ 132,357
Walleye Capital LLC ownership in APLS / Apellis Pharmaceuticals, Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 3,290 shares of Apellis Pharmaceuticals, Inc. (US:APLS) valued at $132,357 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,955 shares of Apellis Pharmaceuticals, Inc.. This represents a change in shares of -16.81% during the quarter. The current value of the position is $134,989 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (APLS) in the form of stock options. The firm currently holds call options representing 40,200 of underlying shares valued at $1,617,246 USD and put options representing 3,200 of underlying shares valued at $128,736 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.

APLS / Apellis Pharmaceuticals, 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)
2026-05-13 2026-03-31 13F/A-1 APELLIS PHARMACEUTICALS COM 03753U106 3,290 -665 -16.81 132 33.33 0.0006
2026-05-08 2026-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 3,290 -665 132 0.0006
2026-02-13 2025-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 3,955 -138,203 -97.22 99 -96.92 0.0003
2025-11-14 2025-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 142,158 60,888 74.92 3,217 128.81 0.0121
2025-08-13 2025-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 81,270 -236,172 -74.40 1,407 -79.75 0.0055
2025-05-14 2025-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 317,442 -77,381 -19.60 6,942 -44.90 0.0313
2025-02-13 2024-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 394,823 292,743 286.78 12,599 328.07 0.0308
2024-11-14 2024-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 102,080 51,441 101.58 2,944 51.54 0.0061
2024-08-14 2024-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 50,639 -60,160 -54.30 1,943 -70.18 0.0035
2024-05-15 2024-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 110,799 -36,875 -24.97 6,513 -26.33 0.0116
2024-02-14 2023-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 147,674 13,691 10.22 8,840 73.45 0.0187
2023-11-21 2023-09-30 13F/A-1 APELLIS PHARMACEUTICALS COM 03753U106 133,983 76,074 131.37 5,097 -3.39 0.0130
2023-11-14 2023-09-30 13F APELLIS PHARMACEUTICALS COM 03753U106 133,983 76,074 5,097 0.0131
2023-08-14 2023-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 57,909 -61,469 -51.49 5,276 -33.01 0.0191
2023-05-15 2023-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 119,378 119,378 7,874 0.1180
2022-08-19 2022-06-30 13F/A-1 APELLIS PHARMACEUTICALS COM 03753U106 0 -12,687 -100.00 0 -100.00
2022-08-08 2022-06-30 13F APELLIS PHARMACEUTICALS COM 03753U106 0 -12,687 0
2022-05-27 2022-03-31 13F/A-01 APELLIS PHARMACEUTICALS COM 03753U106 12,687 -102,446 -88.98 645 -88.15 0.0172
2022-05-16 2022-03-31 13F APELLIS PHARMACEUTICALS COM 03753U106 12,687 -102,446 645 0.0131
2022-05-27 2021-12-31 13F/A-01 APELLIS PHARMACEUTICALS COM 03753U106 115,133 115,133 5,443 0.1691
2022-03-03 2021-12-31 13F APELLIS PHARMACEUTICALS COM 03753U106 115,133 115,133 5,443 0.1360
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
(%)
2026-05-13 2026-03-31 13F/A APELLIS PHARMACEUTICALS COM Call 40,200 737.50 1,617 1,247.50 n/a n/a n/a
2026-05-08 2026-03-31 13F APELLIS PHARMACEUTICALS COM Call 40,200 1,617 n/a n/a n/a
2026-02-13 2025-12-31 13F APELLIS PHARMACEUTICALS COM Call 4,800 -62.50 121 -58.48 n/a n/a n/a
2025-11-14 2025-09-30 13F APELLIS PHARMACEUTICALS COM Call 12,800 -35.68 290 -15.99 n/a n/a n/a
2025-08-13 2025-06-30 13F APELLIS PHARMACEUTICALS COM Call 19,900 109.47 344 66.18 n/a n/a n/a
2025-05-14 2025-03-31 13F APELLIS PHARMACEUTICALS COM Call 9,500 97.92 208 35.29 n/a n/a n/a
2025-02-13 2024-12-31 13F APELLIS PHARMACEUTICALS COM Call 4,800 153 n/a n/a n/a
2024-11-14 2024-09-30 13F APELLIS PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2024-08-14 2024-06-30 13F APELLIS PHARMACEUTICALS COM Call 12,800 -77.10 491 -85.05 n/a n/a n/a
2024-05-15 2024-03-31 13F APELLIS PHARMACEUTICALS COM Call 55,900 459.00 3,286 449.33 n/a n/a n/a
2024-02-14 2023-12-31 13F APELLIS PHARMACEUTICALS COM Call 10,000 -75.43 599 -61.37 n/a n/a n/a
2023-11-21 2023-09-30 13F/A APELLIS PHARMACEUTICALS COM Call 40,700 201.48 1,548 25.96 n/a n/a n/a
2023-11-14 2023-09-30 13F APELLIS PHARMACEUTICALS COM Call 40,700 1,548 n/a n/a n/a
2023-08-14 2023-06-30 13F APELLIS PHARMACEUTICALS COM Call 13,500 121.31 1,230 205.72 n/a n/a n/a
2023-05-15 2023-03-31 13F APELLIS PHARMACEUTICALS COM Call 6,100 -66.67 402 -57.51 n/a n/a n/a
2023-02-14 2022-12-31 13F APELLIS PHARMACEUTICALS COM Call 18,300 24.49 946 -5.78 n/a n/a n/a
2022-11-14 2022-09-30 13F APELLIS PHARMACEUTICALS COM Call 14,700 1,004 n/a n/a n/a
2020-08-14 2020-06-30 13F APELLIS PHARMACEUTICALS COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F APELLIS PHARMACEUTICALS COM Call 9,500 255 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
(%)
2026-05-13 2026-03-31 13F/A APELLIS PHARMACEUTICALS COM Put 3,200 -57.33 129 -31.91 n/a n/a n/a
2026-05-08 2026-03-31 13F APELLIS PHARMACEUTICALS COM Put 3,200 129 n/a n/a n/a
2026-02-13 2025-12-31 13F APELLIS PHARMACEUTICALS COM Put 7,500 63.04 188 80.77 n/a n/a n/a
2025-11-14 2025-09-30 13F APELLIS PHARMACEUTICALS COM Put 4,600 -38.67 104 -19.38 n/a n/a n/a
2025-08-13 2025-06-30 13F APELLIS PHARMACEUTICALS COM Put 7,500 1,400.00 130 1,190.00 n/a n/a n/a
2025-05-14 2025-03-31 13F APELLIS PHARMACEUTICALS COM Put 500 -82.14 11 -88.76 n/a n/a n/a
2025-02-13 2024-12-31 13F APELLIS PHARMACEUTICALS COM Put 2,800 1,300.00 89 1,680.00 n/a n/a n/a
2024-11-14 2024-09-30 13F APELLIS PHARMACEUTICALS COM Put 200 -88.89 6 -92.75 n/a n/a n/a
2024-08-14 2024-06-30 13F APELLIS PHARMACEUTICALS COM Put 1,800 -93.38 69 -95.68 n/a n/a n/a
2024-05-15 2024-03-31 13F APELLIS PHARMACEUTICALS COM Put 27,200 58.14 1,599 55.30 n/a n/a n/a
2024-02-14 2023-12-31 13F APELLIS PHARMACEUTICALS COM Put 17,200 -0.58 1,030 56.38 n/a n/a n/a
2023-11-21 2023-09-30 13F/A APELLIS PHARMACEUTICALS COM Put 17,300 105.95 658 -13.99 n/a n/a n/a
2023-11-14 2023-09-30 13F APELLIS PHARMACEUTICALS COM Put 17,300 658 n/a n/a n/a
2023-08-14 2023-06-30 13F APELLIS PHARMACEUTICALS COM Put 8,400 265.22 765 406.62 n/a n/a n/a
2023-05-15 2023-03-31 13F APELLIS PHARMACEUTICALS COM Put 2,300 -74.73 152 -67.87 n/a n/a n/a
2023-02-14 2022-12-31 13F APELLIS PHARMACEUTICALS COM Put 9,100 600.00 471 428.09 n/a n/a n/a
2022-11-14 2022-09-30 13F APELLIS PHARMACEUTICALS COM Put 1,300 89 n/a n/a n/a
2020-08-14 2020-06-30 13F APELLIS PHARMACEUTICALS COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-05-15 2020-03-31 13F APELLIS PHARMACEUTICALS COM Put 14,600 391 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.