MacroGenics, Inc.
US ˙ NasdaqGS ˙ US5560991094

SecurityMGNX / MacroGenics, Inc.
InstitutionWalleye Capital LLC
Latest Disclosed Ownership335,265 shares
Latest Disclosed Value $ 968,916
Walleye Capital LLC ownership in MGNX / MacroGenics, Inc.

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 335,265 shares of MacroGenics, Inc. (US:MGNX) valued at $968,916 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 33,180 shares of MacroGenics, Inc.. This represents a change in shares of 910.44% during the quarter. The current value of the position is $1,310,886 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (MGNX) in the form of stock options. The firm currently holds call options representing 75,800 of underlying shares valued at $219,062 USD and put options representing 100 of underlying shares valued at $289 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.

MGNX / MacroGenics, 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 MACROGENICS COM 556099109 335,265 302,085 910.44 969 1,726.42 0.0040
2026-05-08 2026-03-31 13F MACROGENICS COM 556099109 335,265 302,085 969 0.0040
2026-02-13 2025-12-31 13F MACROGENICS COM 556099109 33,180 8,000 31.77 53 26.19 0.0002
2025-11-14 2025-09-30 13F MACROGENICS COM 556099109 25,180 0 0.00 42 40.00 0.0002
2025-08-13 2025-06-30 13F MACROGENICS COM 556099109 25,180 25,180 30 0.0001
2025-05-14 2025-03-31 13F MACROGENICS COM 556099109 0 -38,353 -100.00 0 -100.00
2025-02-13 2024-12-31 13F MACROGENICS COM 556099109 38,353 -76,391 -66.58 125 -67.11 0.0003
2024-11-14 2024-09-30 13F MACROGENICS COM 556099109 114,744 -89,201 -43.74 378 -56.47 0.0008
2024-08-14 2024-06-30 13F MACROGENICS COM 556099109 203,945 156,630 331.04 867 24.43 0.0015
2024-05-15 2024-03-31 13F MACROGENICS COM 556099109 47,315 47,315 696 0.0012
2023-05-15 2023-03-31 13F MACROGENICS COM 556099109 0 -83,301 -100.00 0 -100.00
2023-02-14 2022-12-31 13F MACROGENICS COM 556099109 83,301 -57,737 -40.94 559 14.34 0.0102
2022-11-14 2022-09-30 13F MACROGENICS COM 556099109 141,038 -437,150 -75.61 488 -71.40 0.0093
2022-08-19 2022-06-30 13F/A-1 MACROGENICS COM 556099109 578,188 364,210 170.21 1,706 -9.50 0.0470
2022-08-08 2022-06-30 13F MACROGENICS COM 556099109 578,188 364,210 1,706 0.0470
2022-05-27 2022-03-31 13F/A-01 MACROGENICS COM 556099109 213,978 213,978 1,885 0.0504
2022-05-16 2022-03-31 13F MACROGENICS COM 556099109 213,978 213,978 1,885 0.0384
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 MACROGENICS COM Call 75,800 219 n/a n/a n/a
2026-05-08 2026-03-31 13F MACROGENICS COM Call 75,800 219 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 MACROGENICS COM Put 100 0 n/a n/a n/a
2026-05-08 2026-03-31 13F MACROGENICS COM Put 100 0 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.