Upwork Inc.
MX ˙ BMV ˙ US91688F1049
SecurityMX:UPWK / Upwork Inc.
InstitutionParallax Volatility Advisers, L.P.
Latest Disclosed Ownership35,000 shares
Latest Disclosed Value $ 383,600
Parallax Volatility Advisers, L.P. ownership in UPWK / Upwork Inc.

On May 15, 2026 - Parallax Volatility Advisers, L.P. filed a 13F-HR form disclosing ownership of 35,000 shares of Upwork Inc. (MX:UPWK) valued at $383,600 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 51,900 shares of Upwork Inc.. This represents a change in shares of -32.56% during the quarter.

Parallax Volatility Advisers, L.P. has a history of taking positions in derivatives of the underlying security (UPWK) 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 300,000 of underlying shares valued at $3,288,000 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:UPWK / Upwork 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 UPWORK COM 91688F104 35,000 -16,900 -32.56 384 -62.74 0.0010
2026-02-17 2025-12-31 13F UPWORK COM 91688F104 51,900 652 1.27 1,029 8.10 0.0020
2025-11-14 2025-09-30 13F UPWORK COM 91688F104 51,248 17,720 52.85 952 111.33 0.0014
2025-08-14 2025-06-30 13F UPWORK COM 91688F104 33,528 4,958 17.35 451 20.97 0.0010
2025-05-15 2025-03-31 13F UPWORK COM 91688F104 28,570 -8,204 -22.31 373 -38.10 0.0010
2025-02-14 2024-12-31 13F UPWORK COM 91688F104 36,774 1,169 3.28 601 61.56 0.0012
2024-11-14 2024-09-30 13F UPWORK COM 91688F104 35,605 1,466 4.29 372 1.64 0.0007
2024-08-14 2024-06-30 13F UPWORK COM 91688F104 34,139 1,278 3.89 367 -8.96 0.0008
2024-05-15 2024-03-31 13F UPWORK COM 91688F104 32,861 32,861 403 0.0009
2024-02-14 2023-12-31 13F UPWORK COM 91688F104 0 -10,000 -100.00 0 -100.00
2023-11-14 2023-09-30 13F UPWORK COM 91688F104 10,000 -10,153 -50.38 114 -39.89 0.0003
2023-08-14 2023-06-30 13F UPWORK COM 91688F104 20,153 -220 -1.08 188 -18.26 0.0004
2023-05-15 2023-03-31 13F UPWORK COM 91688F104 20,373 -1,394 -6.40 231 1.32 0.0005
2023-02-27 2022-12-31 13F/A-1 UPWORK COM 91688F104 21,767 1,767 8.84 227 -16.54 0.0004
2023-02-14 2022-12-31 13F UPWORK COM 91688F104 21,767 1,767 227 0.0004
2022-11-21 2022-09-30 13F/A-1 UPWORK COM 91688F104 20,000 10,372 107.73 272 36.68 0.0004
2022-11-14 2022-09-30 13F UPWORK COM 91688F104 20,000 10,372 272 0.0004
2022-08-17 2022-06-30 13F/A-1 UPWORK COM 91688F104 9,628 9,628 199 0.0002
2022-08-15 2022-06-30 13F UPWORK COM 91688F104 9,628 9,628 199 0.0002
2022-02-14 2021-12-31 13F UPWORK COM 91688F104 0 -24,983 -100.00 0 -100.00
2021-11-15 2021-09-30 13F/A-2 UPWORK COM 91688F104 24,983 -43,777 -63.67 1,125 -71.93 0.0021
2021-08-16 2021-06-30 13F/A-1 UPWORK COM 91688F104 68,760 52,014 310.61 4,008 434.40 0.0055
2021-05-14 2021-03-31 13F/A-2 UPWORK COM 91688F104 16,746 -24,941 -59.83 750 -47.88 0.0017
2021-02-16 2020-12-31 13F/A-2 UPWORK COM 91688F104 41,687 37,803 973.30 1,439 2,016.18 0.0032
2020-11-13 2020-09-30 13F UPWORK COM 91688F104 3,884 -118,249 -96.82 68 -96.15 0.0001
2020-08-14 2020-06-30 13F UPWORK COM 91688F104 122,133 -79,522 -39.43 1,764 35.59 0.0021
2020-05-15 2020-03-31 13F UPWORK COM 91688F104 201,655 178,986 789.56 1,301 437.60 0.0017
2020-02-14 2019-12-31 13F UPWORK COM 91688F104 22,669 7,473 49.18 242 19.80 0.0003
2019-11-14 2019-09-30 13F UPWORK UPWORK INC 91688F104 15,196 15,196 202 0.0002
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
(%)
2025-11-14 2025-09-30 13F UPWORK COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2025-08-14 2025-06-30 13F UPWORK COM Call 40,700 -0.25 547 2.82 n/a n/a n/a
2025-05-15 2025-03-31 13F UPWORK COM Call 40,800 58.14 532 26.37 n/a n/a n/a
2025-02-14 2024-12-31 13F UPWORK COM Call 25,800 0.39 422 57.09 n/a n/a n/a
2024-11-14 2024-09-30 13F UPWORK COM Call 25,700 0.00 269 -2.90 n/a n/a n/a
2024-08-14 2024-06-30 13F UPWORK COM Call 25,700 2.80 276 -9.80 n/a n/a n/a
2024-05-15 2024-03-31 13F UPWORK COM Call 25,000 284.62 306 218.75 n/a n/a n/a
2024-02-14 2023-12-31 13F UPWORK COM Call 6,500 0.00 97 31.51 n/a n/a n/a
2023-11-14 2023-09-30 13F UPWORK COM Call 6,500 -18.75 74 -1.35 n/a n/a n/a
2023-08-14 2023-06-30 13F UPWORK COM Call 8,000 -3.61 75 -20.43 n/a n/a n/a
2023-05-15 2023-03-31 13F UPWORK COM Call 8,300 23.88 94 34.78 n/a n/a n/a
2023-02-27 2022-12-31 13F/A UPWORK COM Call 6,700 70 n/a n/a n/a
2023-02-14 2022-12-31 13F UPWORK COM Call 6,700 70 n/a n/a n/a
2022-11-21 2022-09-30 13F/A UPWORK COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F UPWORK COM Call 0 0 n/a n/a n/a
2022-08-17 2022-06-30 13F/A UPWORK COM Call 1,200 25 n/a n/a n/a
2022-08-15 2022-06-30 13F UPWORK COM Call 1,200 25 n/a n/a n/a
2022-05-16 2022-03-31 13F UPWORK COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F/A UPWORK COM Call 25,000 -59.61 853 -69.43 n/a n/a n/a
2021-11-15 2021-09-30 13F/A UPWORK COM Call 61,900 284.47 2,790 197.44 n/a n/a n/a
2021-08-16 2021-06-30 13F/A UPWORK COM Call 16,100 -96.00 938 -94.80 n/a n/a n/a
2021-05-14 2021-03-31 13F/A UPWORK COM Call 402,700 23.68 18,028 60.41 n/a n/a n/a
2021-02-16 2020-12-31 13F/A UPWORK COM Call 325,600 225.60 11,239 544.44 n/a n/a n/a
2020-11-13 2020-09-30 13F UPWORK COM Call 100,000 54.56 1,744 86.72 n/a n/a n/a
2020-08-14 2020-06-30 13F UPWORK COM Call 64,700 0.00 934 123.98 n/a n/a n/a
2020-05-15 2020-03-31 13F UPWORK COM Call 64,700 417 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 UPWORK COM Put 300,000 -42.31 3,288 -68.10 n/a n/a n/a
2026-02-17 2025-12-31 13F UPWORK COM Put 520,000 0.00 10,306 6.73 n/a n/a n/a
2025-11-14 2025-09-30 13F UPWORK COM Put 520,000 10.64 9,656 52.88 n/a n/a n/a
2025-08-14 2025-06-30 13F UPWORK COM Put 470,000 9.30 6,317 12.56 n/a n/a n/a
2025-05-15 2025-03-31 13F UPWORK COM Put 430,000 -42.67 5,612 -54.24 n/a n/a n/a
2025-02-14 2024-12-31 13F UPWORK COM Put 750,000 0.00 12,262 56.46 n/a n/a n/a
2024-11-14 2024-09-30 13F UPWORK COM Put 750,000 0.00 7,838 -2.79 n/a n/a n/a
2024-08-14 2024-06-30 13F UPWORK COM Put 750,000 0.00 8,062 -12.32 n/a n/a n/a
2024-05-15 2024-03-31 13F UPWORK COM Put 750,000 0.00 9,195 -17.55 n/a n/a n/a
2024-02-14 2023-12-31 13F UPWORK COM Put 750,000 0.00 11,152 30.89 n/a n/a n/a
2023-11-14 2023-09-30 13F UPWORK COM Put 750,000 50.00 8,520 82.44 n/a n/a n/a
2023-08-14 2023-06-30 13F UPWORK COM Put 500,000 0.00 4,670 -17.49 n/a n/a n/a
2023-05-15 2023-03-31 13F UPWORK COM Put 500,000 -0.40 5,660 8.02 n/a n/a n/a
2023-02-27 2022-12-31 13F/A UPWORK COM Put 502,000 -0.04 5,241 -23.39 n/a n/a n/a
2023-02-14 2022-12-31 13F UPWORK COM Put 502,000 5,241 n/a n/a n/a
2022-11-21 2022-09-30 13F/A UPWORK COM Put 502,200 -0.10 6,840 -34.20 n/a n/a n/a
2022-11-14 2022-09-30 13F UPWORK COM Put 502,200 6,840 n/a n/a n/a
2022-08-17 2022-06-30 13F/A UPWORK COM Put 502,700 10,395 n/a n/a n/a
2022-08-15 2022-06-30 13F UPWORK COM Put 502,700 10,395 n/a n/a n/a
2022-05-16 2022-03-31 13F UPWORK COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-14 2021-12-31 13F/A UPWORK COM Put 14,200 -83.79 485 -87.72 n/a n/a n/a
2021-11-15 2021-09-30 13F/A UPWORK COM Put 87,600 144.01 3,950 88.63 n/a n/a n/a
2021-08-16 2021-06-30 13F/A UPWORK COM Put 35,900 -17.85 2,094 7.27 n/a n/a n/a
2021-05-14 2021-03-31 13F/A UPWORK COM Put 43,700 102.31 1,952 162.01 n/a n/a n/a
2021-02-16 2020-12-31 13F/A UPWORK COM Put 21,600 745 n/a n/a n/a
2020-11-13 2020-09-30 13F UPWORK COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-08-14 2020-06-30 13F UPWORK COM Put 202,300 -16.51 2,921 86.88 n/a n/a n/a
2020-05-15 2020-03-31 13F UPWORK COM Put 242,300 -62.85 1,563 -77.54 n/a n/a n/a
2020-02-14 2019-12-31 13F UPWORK COM Put 652,300 6,960 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.