Semrush Holdings, Inc.
US ˙ NYSE ˙ US81686C1045
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT

SecuritySEMR / Semrush Holdings, Inc.
InstitutionCitadel Advisors Llc
ManagerKen Griffin
Latest Disclosed Ownership91,911 shares
Latest Disclosed Value $ 1,097,417
Citadel Advisors Llc ownership in SEMR / Semrush Holdings, Inc.

On May 15, 2026 - Citadel Advisors Llc filed a 13F-HR form disclosing ownership of 91,911 shares of Semrush Holdings, Inc. (US:SEMR) valued at $1,097,417 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 592,643 shares of Semrush Holdings, Inc.. This represents a change in shares of -84.49% during the quarter. The current value of the position is $0 USD.

Citadel Advisors Llc has a history of taking positions in derivatives of the underlying security (SEMR) 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 0 of underlying shares valued at $0 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.

SEMR / Semrush Holdings, 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 SEMRUSH HLDGS CL A COM 81686C104 91,911 -500,732 -84.49 1,097 -84.43 0.0002
2026-02-17 2025-12-31 13F SEMRUSH HLDGS CL A COM 81686C104 592,643 351,394 145.66 7,047 312.53 0.0011
2025-11-14 2025-09-30 13F SEMRUSH HLDGS CL A COM 81686C104 241,249 -915,763 -79.15 1,708 -83.69 0.0003
2025-08-14 2025-06-30 13F SEMRUSH HLDGS CL A COM 81686C104 1,157,012 826,798 250.38 10,471 239.94 0.0018
2025-05-15 2025-03-31 13F SEMRUSH HLDGS CL A COM 81686C104 330,214 192,721 140.17 3,081 88.61 0.0006
2025-02-14 2024-12-31 13F SEMRUSH HLDGS CL A COM 81686C104 137,493 -87,263 -38.83 1,633 -53.74 0.0003
2024-11-14 2024-09-30 13F SEMRUSH HLDGS CL A COM 81686C104 224,756 210,054 1,428.74 3,531 1,701.02 0.0007
2024-08-14 2024-06-30 13F SEMRUSH HLDGS CL A COM 81686C104 14,702 -146,770 -90.90 197 -90.85 0.0000
2024-05-15 2024-03-31 13F SEMRUSH HLDGS CL A COM 81686C104 161,472 18,044 12.58 2,141 9.29 0.0004
2024-02-14 2023-12-31 13F SEMRUSH HLDGS CL A COM 81686C104 143,428 76,737 115.06 1,959 246.11 0.0004
2023-11-14 2023-09-30 13F SEMRUSH HLDGS CL A COM 81686C104 66,691 56,357 545.36 567 477.55 0.0001
2023-08-14 2023-06-30 13F SEMRUSH HLDGS CL A COM 81686C104 10,334 -460,903 -97.81 99 -97.93 0.0000
2023-05-15 2023-03-31 13F SEMRUSH HLDGS CL A COM 81686C104 471,237 471,237 4,736 0.0010
2023-02-14 2022-12-31 13F SEMRUSH HLDGS CL A COM 81686C104 0 -30,959 -100.00 0 -100.00
2022-11-14 2022-09-30 13F SEMRUSH HLDGS CL A COM 81686C104 30,959 30,959 347 0.0001
2022-05-16 2022-03-31 13F SEMRUSH HLDGS CL A COM 81686C104 0 -131,075 -100.00 0 -100.00
2022-02-14 2021-12-31 13F SEMRUSH HLDGS CL A COM 81686C104 131,075 113,144 631.00 2,733 561.74 0.0006
2021-11-15 2021-09-30 13F SEMRUSH HLDGS Cmn 81686C104 17,931 17,931 413 0.0001
2021-08-16 2021-06-30 13F SEMRUSH HLDGS CL A COM 81686C104 0 -95,000 -100.00 0 -100.00
2021-05-21 2021-03-31 13F/A-1 SEMRUSH HLDGS CL A COM 81686C104 95,000 95,000 1,131 0.0003
2021-05-17 2021-03-31 13F SEMRUSH HLDGS CL A COM 81686C104 95,000 95,000 1,131 0.0003
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
(%)
2025-08-14 2025-06-30 13F SEMRUSH HLDGS CL A COM Call 0 -100.00 0 n/a n/a n/a
2025-05-15 2025-03-31 13F SEMRUSH HLDGS CL A COM Call 100 -98.73 1 -100.00 n/a n/a n/a
2025-02-14 2024-12-31 13F SEMRUSH HLDGS CL A COM Call 7,900 16.18 94 -12.26 n/a n/a n/a
2024-11-14 2024-09-30 13F SEMRUSH HLDGS CL A COM Call 6,800 466.67 107 562.50 n/a n/a n/a
2024-08-14 2024-06-30 13F SEMRUSH HLDGS CL A COM Call 1,200 71.43 16 77.78 n/a n/a n/a
2024-05-15 2024-03-31 13F SEMRUSH HLDGS CL A COM Call 700 -56.25 9 -57.14 n/a n/a n/a
2024-02-14 2023-12-31 13F SEMRUSH HLDGS CL A COM Call 1,600 -58.97 22 -36.36 n/a n/a n/a
2023-11-14 2023-09-30 13F SEMRUSH HLDGS CL A COM Call 3,900 18.18 33 6.45 n/a n/a n/a
2023-08-14 2023-06-30 13F SEMRUSH HLDGS CL A COM Call 3,300 -40.00 32 -43.64 n/a n/a n/a
2023-05-15 2023-03-31 13F SEMRUSH HLDGS CL A COM Call 5,500 55 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 SEMRUSH HLDGS CL A COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-17 2025-12-31 13F SEMRUSH HLDGS CL A COM Put 29,500 -73.45 351 -55.47 n/a n/a n/a
2025-11-14 2025-09-30 13F SEMRUSH HLDGS CL A COM Put 111,100 -24.06 787 -40.63 n/a n/a n/a
2025-08-14 2025-06-30 13F SEMRUSH HLDGS CL A COM Put 146,300 26.67 1,324 22.93 n/a n/a n/a
2025-05-15 2025-03-31 13F SEMRUSH HLDGS CL A COM Put 115,500 3,021.62 1,078 2,404.65 n/a n/a n/a
2025-02-14 2024-12-31 13F SEMRUSH HLDGS CL A COM Put 3,700 -82.13 44 -86.77 n/a n/a n/a
2024-11-14 2024-09-30 13F SEMRUSH HLDGS CL A COM Put 20,700 -66.72 325 -60.94 n/a n/a n/a
2024-08-14 2024-06-30 13F SEMRUSH HLDGS CL A COM Put 62,200 -17.62 833 -16.88 n/a n/a n/a
2024-05-15 2024-03-31 13F SEMRUSH HLDGS CL A COM Put 75,500 427.97 1,001 413.33 n/a n/a n/a
2024-02-14 2023-12-31 13F SEMRUSH HLDGS CL A COM Put 14,300 24.35 195 101.03 n/a n/a n/a
2023-11-14 2023-09-30 13F SEMRUSH HLDGS CL A COM Put 11,500 -42.21 98 -48.95 n/a n/a n/a
2023-08-14 2023-06-30 13F SEMRUSH HLDGS CL A COM Put 19,900 89.52 190 80.95 n/a n/a n/a
2023-05-15 2023-03-31 13F SEMRUSH HLDGS CL A COM Put 10,500 106 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.