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Berto Acquisition (TACOU)

Berto Acquisition on one page: short interest, daily short volume, fails to deliver and 13F holders. Listed on Nasdaq, classified by the SEC as blank checks.

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457

Short interest

settlement 2026-10-15

91.4

Days to cover

+88.1 days vs prior

55.6%

Short share of volume

2026-09-03

5,000

Fails to deliver

settlement 2026-01-06

As of 2026-10-15.

Short interest

FINRA, twice a month. The newest 28 settlements in the table, 28 in the chart. JSON

As of 15 October 2026, short interest in TACOU is 457 shares, down 118 shares over the last month. Over the last 28 readings it ranged from 53 shares (15 September 2025) to 63,193 shares (15 May 2025). The latest reading sits at the bottom of that range. At the reported average volume of 5 shares a day that is 91.4 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-10-15457-0.7%591.40
2026-09-30460-20.0%1393.31
2026-09-15575+0.0%1633.53
2026-08-31575+0.0%5410.65
2026-08-14575+0.0%4491.28
2026-07-31575+0.0%4221.36
2026-07-15575+0.0%1,6371.00
2026-06-30575-11.5%4,5511.00
2026-06-15650-58.4%7521.00
2026-05-291,562-54.6%5,4381.00
2026-05-153,441+3177.1%4,0241.00
2026-04-30105-1.9%3,1221.00
2026-04-15107+0.0%1601.00
2026-03-31107-48.3%1,1431.00
2026-03-13207+100.0%1,2201.00
2025-12-15200+100.0%3,7701.00
2025-10-31199-86.7%36,5201.00
2025-10-151,499-24.2%4,9591.00
2025-09-301,978+3632.1%9,9501.00
2025-09-1553-15.9%9,3391.00
2025-08-2963-98.0%5,6591.00
2025-08-153,090-77.7%23,2821.00
2025-07-3113,831+30.7%23,3051.00
2025-07-1510,585-17.0%23,0371.00
2025-06-3012,747-79.2%101,0341.00
2025-06-1361,300+63.2%537,2171.00
2025-05-3037,552-40.6%228,4691.00
2025-05-1563,193+100.0%433,9921.00

Daily short volume

FINRA Reg SHO, the last 30 sessions. JSON

As of 3 September 2026, the short share of TACOU volume is 55.6%, up 55.2 points over the last five sessions. Over the last 30 readings it ranged from 0.4% (15 May 2026) to 100.0% (11 December 2025). The latest reading is 12.2 points above the 30-session average of 43.4%, on 900 shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-0350090055.6%0
2026-07-302003K8.0%0
2026-06-2910010595.2%0
2026-06-262K10K15.9%0
2026-06-029725737.7%0
2026-05-1593K0.4%0
2026-05-132K14K11.5%0
2026-05-0720070028.6%0
2026-05-0691K0.6%0
2026-04-2820085623.4%0
2026-04-273K16K18.4%0
2026-04-241033K3.6%0
2026-03-1030060050.0%0
2026-03-0220030066.7%0
2026-02-0630041073.2%0
2026-01-282K2K100.0%0
2026-01-2610060016.7%0
2026-01-23640640100.0%0
2026-01-1520030066.7%0
2026-01-0580180299.9%0
2025-12-16100100100.0%0
2025-12-154002K21.0%0
2025-12-129274K22.3%0
2025-12-11446446100.0%0
2025-12-019096K15.4%0
2025-11-2630079937.5%0
2025-11-243K5K61.1%0
2025-11-133K6K49.3%0
2025-10-312K13K14.2%0
2025-10-304K51K7.9%0

Fails to deliver

SEC, the last 22 settlement dates with a fail. JSON

As of 6 January 2026, the fails-to-deliver balance in TACOU is 5,000 shares, up 4,996 shares over the last settlement date. Over the last 22 readings it ranged from 4 shares (15 December 2025) to 100,000 shares (30 May 2025). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-01-065,000$10.35$52K
2025-12-154$10.29$41
2025-10-31199$10.39$2K
2025-06-0649,895$10.57$527K
2025-06-049,399$10.78$101K
2025-06-0350,000$10.39$520K
2025-05-30100,000$10.25$1.0M
2025-05-021,675$10.14$17K
2025-05-0141,700$10.15$423K
2015-06-26269$17.60$5K
2015-06-08449$17.74$8K
2015-06-05449$18.52$8K
2015-06-04339$18.41$6K
2015-06-03219$19.10$4K
2015-05-1811$19.80$218
2015-05-151,130$18.94$21K
2015-05-141,338$19.24$26K
2015-05-081,379$18.25$25K
2015-05-071,679$18.01$30K
2015-05-0499$16.68$2K
2015-04-3067$17.20$1K
2015-04-29784$17.02$13K

13F holders

Tracked managers holding TACOU at their latest 13F. JSON

1 of the 30 tracked managers held TACOU at their latest 13F, $180K in total at quarter-end prices. Citadel Advisors is the largest at $180K (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 0 added shares and 1 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-3017K$180K0.00%-7K

Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.

What this page is

Berto Acquisition in the regulatory record

Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.

Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.

This page follows Berto Acquisition (TACOU), SEC CIK 2033122, listed on Nasdaq, classified by the SEC as blank checks. The cross-market tables live on the short interest and insider transactions hubs.

Source and updates

Short interest
FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-09-03.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-01-06.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Company record
EDGAR filing index for CIK 2033122Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
10 requests a minute without a key, 30 with a free key from a free account.

How to read it

  • Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
  • Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
  • Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.

Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.

Other companies the SEC classifies as blank checks

Other company pages

Datasets

Frequently Asked Questions

How much of TACOU is sold short?
457 shares were held short at the 2026-10-15 settlement, 91.4 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is TACOU's daily short volume?
On 2026-09-03, 500 of the 900 TACOU shares reported to FINRA were sold short, 55.6% of the day's reported volume. Short volume is a flow for one day, not a position.
Does TACOU have fails to deliver?
The SEC's latest file shows 5,000 TACOU shares failed to deliver at settlement 2026-01-06. Fails are reported per settlement date and published twice a month with a lag.
Are TACOU insiders buying or selling?
No Form 4 filings for TACOU are on record.
Which tracked 13F managers own TACOU?
1 of the 30 tracked 13F managers held TACOU shares at their latest filing, $180K in all. The largest: Ken Griffin's Citadel Advisors (17K shares, $180K).

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.