Sigma Investment Management Co (CIK: 0001532618) is a financial institution headquartered at 121 Sw Morrison Street, Suite 800, Portland, Oregon 97204. The firm regularly files Form 13F with the U.S. Securities and Exchange Commission (SEC), disclosing its equity holdings and investment positions.

As of the latest reporting period (2018-12-31), the institution manages a portfolio valued at $125.24 M, comprising 20 distinct securities. Over its filing history, it has submitted 25 Form 13F reports.

To view the institution’s full SEC filing history:
🔗 View All SEC Filings

Q4 2018 — Top-10 concentration: 97.3%. Quarterly turnover: 2.2%. ▲ 4 new, +5 added, −4 reduced, ×3 exited.

Top Buys

Q4 2018

1. ITOT Ishares Core S&P Total Us Stock Market Etf

+$3.78 M

2. MUB Ishares National Muni Bond Etf

+$2.54 M

3. TFI Spdr Nuveen Ice Municipal Bond Etf

+$2.04 M

4. IXUS Ishares Core Msci Total International Stock Etf

+$1.64 M

5. MTUM Ishares Msci Usa Momentum Factor Etf

+$1.17 M

Top Sells

Q4 2018

1. AGG Ishares Core Us Aggregate Bond Etf

−$1.55 M

2. BND Vanguard Total Bond Market Etf

−$386,000

3. Vaneck Vectors Etf Tr

−$359,000

4. SPY Spdr S&P 500 Etf Trust

−$204,000

5. SJM The J M Smucker Company

−$119,326.68

Stocks/ETFs

+1.92%

$125.24 M 100.00%

Options

$0 0.00%

Debt

$0 0.00%

Other

$0 0.00%

Name	Shares	Market Value	Weight	Change	Activity
Ishares Core Us Aggregate Bond Etf ETF-AGG	512,496	$54.58 M	43.58%	▼ 14,549	Reduce -2.8%
Ishares Russell 3000 Etf ETF-IWV	154,223	$22.66 M	18.09%	▲ 4,302	Add 2.9%
Ishares Msci Usa Momentum Factor Etf ETF-MTUM	162,127	$16.25 M	12.97%	▲ 11,657	Add 7.8%
Vanguard Total International Stock Etf ETF-VXUS	199,105	$9.4 M	7.51%	▲ 11,947	Add 6.4%
Ishares National Muni Bond Etf ETF-MUB	76,187	$8.31 M	6.63%	▲ 23,292	Add 44.0%
Ishares Core S&P Total Us Stock Market Etf ETF-ITOT	66,544	$3.78 M	3.02%	▲ 66,544	New Buy
Spdr Nuveen Ice Municipal Bond Etf ETF-TFI	62,452	$3 M	2.40%	▲ 42,295	Add 209.8%
Ishares Core Msci Total International Stock Etf ETF-IXUS	31,236	$1.64 M	1.31%	▲ 31,236	New Buy
The J M Smucker Company SJM	16,842	$1.58 M	1.26%	▼ 1,276	Reduce -7.0%
Ishares Short Treasury Bond Etf ETF-SHV	6,014	$663,000	0.53%	▼ 400	Reduce -6.2%

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Sigma Investment Management Co's Portfolio

This portfolio view aggregates one or more SEC Form 13F filings submitted by Sigma Investment Management Co each quarter. Holdings are organized into Stocks/ETFs, Options, Debt, and Other, with transaction markers indicating New Buy, Add, Reduce, No Change, or Sold Out. Reported anomalies are corrected where possible, and share counts are adjusted to reflect corporate actions such as stock splits. Since 2013, we have collected 24 quarters of portfolio data for this firm, providing a transparent record of institutional strategy over time.

Options Exposure History

CALL PUT

Report Date	Type	Underlying Shares	Notional Value	% Change

Report Date	Bought/Sold (Sh.)	% Change	Qtr. End Shares	Reported Price

Stocks ETFs

Name	Shares	Value	% of Portfolio	% Change
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CALL PUT

Type	Name	Shares	Value	% of Portfolio	% Change
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Name	Amount	Value	% of Portfolio	% Change
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Name	Shares	Value	% of Portfolio	% Change
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Sigma Investment Management Co Quarterly 13F Statistics

Discover detailed insights into Sigma Investment Management Co’s SEC Form 13F filings, including:

Quarterly changes in holdings
Portfolio turnover
Asset allocation trends
Top 10 stock and ETF positions

This page provides a transparent view of institutional strategies based on official SEC disclosures, helping investors track long‑term shifts since 2013.

Quarter	Holdings	Total Value	Turnover Rate	Asset Allocation	Top 10 Stock & ETF Holdings

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Sigma Investment Management Co's All 13F Filings

This section lists all SEC Form 13F filings submitted by Sigma Investment Management Co.

Form 13F must be filed within 45 days after the end of each calendar quarter and discloses the reporting manager, the securities held, their CUSIP numbers, the number of shares held at quarter-end, and the total reported market value.

Please note that the market value shown reflects reported holdings only and should not be considered a substitute for Assets Under Management (AUM), as cash positions are excluded.
Each filing entry includes a direct link to the original Form 13F document on the SEC’s EDGAR system .

Report For	Filed At	AUM	Holdings	Form Type	Source

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Insider Trading Activity (SEC Form 4)

This section tracks real-time insider transactions reported via SEC Form 4 filings. Unlike the quarterly 13F portfolio snapshots, these records reflect immediate buying and selling activity where the filer acts as a corporate insider. Use this data to spot timely market moves.

Date Top Line (Transaction Date): The date of the most recent insider transaction. Bottom Line (Filing Date): The date the transaction was filed with the SEC.	Value Total Value: The total monetary value of the transaction. (Shares × Price)	Shares Shares Traded: Number of shares bought or sold in this specific transaction. Adjusted for splits.	Position / Chg Top Line (Held): Total shares owned after the transaction. Bottom Line (Change %): The percentage change in holdings due to this trade.
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Data Source & Methodology: This table is sourced exclusively from SEC Form 4 filings and is adjusted for stock splits. It reflects active insider trading decisions and does not include passive beneficial ownership reported in 13F or 13D/G filings.

Sigma Investment Management Co 13F Filings, Portfolio & Analysis

Sigma Investment Management Co — Portfolio Overview & Company Profile

Portfolio Summary (Q4 2018)

Top Buys

Top Sells

Asset Allocation

Sector Allocation (Stocks)

Top Stock & ETF Holdings (Q4 2018)

Historical Portfolio Charts

Sigma Investment Management Co's Portfolio

Sigma Investment Management Co Quarterly 13F Statistics

Sigma Investment Management Co's All 13F Filings

Insider Trading Activity (SEC Form 4)