Zscaler, Inc.
US ˙ NasdaqGS ˙ US98980G1022

SecurityZS / Zscaler, Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership39,124 shares
Latest Disclosed Value $ 5,488,397
Advisor Group Holdings, Inc. ownership in ZS / Zscaler, Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 39,124 shares of Zscaler, Inc. (US:ZS) valued at $5,488,706 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 40,651 shares of Zscaler, Inc.. This represents a change in shares of -3.76% during the quarter. The current value of the position is $5,116,637 USD.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (ZS) in the form of stock options. The firm currently holds call options representing 1 of underlying shares valued at $2,045 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.

ZS / Zscaler, 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 ZSCALER COM 98980G102 39,124 -1,527 -3.76 5,488 -39.97 0.0047
2026-02-17 2025-12-31 13F ZSCALER COM 98980G102 40,651 -9,006 -18.14 9,143 -35.92 0.0134
2025-11-14 2025-09-30 13F ZSCALER COM 98980G102 49,657 1,200 2.48 14,267 -6.03 0.0200
2025-09-04 2025-06-30 13F/A-1 SCALER COM 98980G102 48,457 8,185 20.32 15,184 90.03 0.0270
2025-08-13 2025-06-30 13F SCALER COM 98980G102 34,070 -6,202 7,586 0.0088
2025-05-12 2025-03-31 13F ZSCALER COM 98980G102 40,272 13,738 51.78 7,991 68.07 0.0178
2025-06-06 2024-12-31 13F/A-1 ZSCALER COM 98980G102 26,534 -16,971 -39.01 4,754 -36.07 0.0107
2025-02-07 2024-12-31 13F ZSCALER COM 98980G102 42,619 -886 7,285 0.0186
2024-11-13 2024-09-30 13F ZSCALER COM 98980G102 43,505 -2,884 -6.22 7,436 -16.59 0.0168
2024-08-13 2024-06-30 13F ZSCALER COM 98980G102 46,389 -1,426 -2.98 8,915 -3.16 0.0211
2024-05-10 2024-03-31 13F ZSCALER COM 98980G102 47,815 -20,225 -29.73 9,207 -38.92 0.0206
2024-02-12 2023-12-31 13F ZSCALER COM 98980G102 68,040 43,379 175.90 15,072 292.91 0.0264
2023-11-13 2023-09-30 13F ZSCALER COM 98980G102 24,661 324 1.33 3,837 7.03 0.0057
2023-08-21 2023-06-30 13F/A-1 ZSCALER COM 98980G102 24,337 -1,650 -6.35 3,584 19.43 0.0064
2023-08-10 2023-06-30 13F ZSCALER COM 98980G102 24,337 -1,650 3,584 0.0010
2023-05-12 2023-03-31 13F ZSCALER COM 98980G102 25,987 3,662 16.40 3,001 20.18 0.0056
2023-02-10 2022-12-31 13F ZSCALER COM 98980G102 22,325 5,799 35.09 2,498 -8.10 0.0051
2022-11-14 2022-09-30 13F ZSCALER COM 98980G102 16,526 -1,647 -9.06 2,717 -0.62 0.0062
2022-08-10 2022-06-30 13F ZSCALER COM 98980G102 18,173 -2,129 -10.49 2,734 -32.54 0.0060
2022-05-04 2022-03-31 13F ZSCALER COM 98980G102 20,302 -2,684 -11.68 4,053 -43.90 0.0079
2022-02-03 2021-12-31 13F ZSCALER COM 98980G102 22,986 4,972 27.60 7,224 52.79 0.0137
2021-11-05 2021-09-30 13F ZSCALER COM 98980G102 18,014 -12,879 -41.69 4,728 -29.04 0.0099
2021-08-02 2021-06-30 13F ZSCALER COM 98980G102 30,893 13,785 80.58 6,663 125.79 0.0144
2021-05-13 2021-03-31 13F ZSCALER COM 98980G102 17,108 -6,608 -27.86 2,951 -37.69 0.0071
2021-02-10 2020-12-31 13F ZSCALER COM 98980G102 23,716 -292 -1.22 4,736 43.86 0.0126
2020-11-12 2020-09-30 13F ZSCALER COM 98980G102 24,008 3,163 15.17 3,292 44.26 0.0098
2020-08-14 2020-06-30 13F ZSCALER COM 98980G102 20,845 -106,919 -83.68 2,282 63.70 0.0077
2020-05-18 2020-03-31 13F ZSCALER COM 98980G102 127,764 127,764 1,394 0.0057
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 ZSCALER CALL Call 1 -66.67 2 -71.43 n/a n/a n/a
2026-02-17 2025-12-31 13F ZSCALER CALL Call 3 200.00 7 -41.67 n/a n/a n/a
2025-11-14 2025-09-30 13F ZSCALER CALL Call 1 0.00 12 -25.00 n/a n/a n/a
2025-09-04 2025-06-30 13F/A ZSCALER CALL Call 1 0.00 16 166.67 n/a n/a n/a
2025-08-13 2025-06-30 13F ZSCALER CALL Call 1 6 n/a n/a n/a
2025-05-12 2025-03-31 13F ZSCALER CALL Call 1 0.00 7 20.00 n/a n/a n/a
2025-06-06 2024-12-31 13F/A ZSCALER CALL Call 1 0.00 6 66.67 n/a n/a n/a
2025-02-07 2024-12-31 13F ZSCALER CALL Call 1 3 n/a n/a n/a
2024-11-13 2024-09-30 13F ZSCALER CALL Call 1 0.00 3 -40.00 n/a n/a n/a
2024-08-13 2024-06-30 13F ZSCALER CALL Call 1 0.00 5 0.00 n/a n/a n/a
2024-05-10 2024-03-31 13F ZSCALER CALL Call 1 6 n/a n/a n/a
2024-02-12 2023-12-31 13F ZSCALER INC CALL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-11-13 2023-09-30 13F ZSCALER INC CALL COM Call 1 0.00 4 33.33 n/a n/a n/a
2023-08-21 2023-06-30 13F/A ZSCALER INC CALL COM Call 1 0.00 4 50.00 n/a n/a n/a
2023-08-10 2023-06-30 13F ZSCALER INC CALL COM Call 1 4 n/a n/a n/a
2023-05-12 2023-03-31 13F ZSCALER INC CALL COM Call 1 2 n/a n/a n/a
2022-05-04 2022-03-31 13F ZSCALER INC CALL COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-02-03 2021-12-31 13F ZSCALER INC CALL COM Call 1 22 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.