Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$33.7M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.8M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$14.3M |
| 4 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$11.9M |
| 5 |
Citigroup
C
|
+$8.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$34.2M |
| 2 |
GMCR
KEURIG GREEN MTN INC
GMCR
|
+$17.9M |
| 3 |
Chipotle Mexican Grill
CMG
|
+$14.7M |
| 4 |
Walt Disney
DIS
|
+$13.3M |
| 5 |
Booking.com
BKNG
|
+$12.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 7.64% |
| 2 | Communication Services | 6.85% |
| 3 | Consumer Discretionary | 4.92% |
| 4 | Healthcare | 4.57% |
| 5 | Financials | 4.22% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
701
Eaton
ETN
$161B
| $274K | 0.02% |
4,385
-8,089
| -65% | -$447K |
|
|
SWIR
702
PUT
DELISTED
Sierra Wireless
SWIR
| $274K | 0.02% |
690
+98
| +17% | +$1.32K |
|
703
CALL
JD.com
JD
$40.7B
| $272K | 0.02% |
4,545
+1,961
| +76% | +$51.5K |
|
704
Global Payments
GPN
$21.2B
| $270K | 0.02% |
4,136
+3,899
| +1,645% | +$231K |
|
705
PUT
Petrobras
PBR
$124B
| $270K | 0.02% |
2,869
+1,694
| +144% | +$6.84K |
|
|
MDC
706
DELISTED
M.D.C. Holdings, Inc.
MDC
| $270K | 0.02% |
+14,998
| New | +$242K |
|
|
SGYP
707
DELISTED
Synergy Pharmaceuticals, Inc Common Stock
SGYP
| $270K | 0.02% |
97,942
+75,700
| +340% | +$274K |
|
708
PUT
American Airlines Group
AAL
$9B
| $269K | 0.02% |
1,204
-1,393
| -54% | -$56.1K |
|
709
CALL
Applied Materials
AMAT
$451B
| $269K | 0.02% |
661
+286
| +76% | +$5.21K |
|
|
EXAS
710
PUT
DELISTED
Exact Sciences
EXAS
| $268K | 0.02% |
415
+313
| +307% | +$2K |
|
711
CALL
Teck Resources
TECK
$29.2B
| $267K | 0.02% |
1,548
+556
| +56% | +$3.01K |
|
712
PUT
Walmart Inc
WMT
$855B
| $267K | 0.02% |
5,874
-6,249
| -52% | -$137K |
|
713
PUT
BlackBerry
BB
$5.12B
| $266K | 0.02% |
1,319
+587
| +80% | +$4.4K |
|
714
Direxion Daily Technology Bull 3x ETF
TECL
$5.49B
| $266K | 0.02% |
67,500
-29,220
| -30% | -$93.5K |
|
715
CALL
Vulcan Materials
VMC
$35.4B
| $266K | 0.02% |
365
+130
| +55% | +$12.3K |
|
|
NSR
716
DELISTED
Neustar Inc
NSR
| $266K | 0.02% |
+10,817
| New | +$259K |
|
717
CALL
Bristol-Myers Squibb
BMY
$125B
| $265K | 0.02% |
1,424
+91
| +7% | +$5.74K |
|
|
ASNA
718
DELISTED
Ascena Retail Group, Inc.
ASNA
| $265K | 0.02% |
1,200
+218
| +22% | +$38.5K |
|
719
Apollo Global Management
APO
$69.6B
| $264K | 0.02% |
15,421
+5,060
| +49% | +$75.9K |
|
720
PUT
3D Systems Corp
DDD
$436M
| $264K | 0.02% |
2,392
+1,679
| +235% | +$17.3K |
|
721
PUT
Visa
V
$664B
| $264K | 0.02% |
2,028
-119
| -6% | -$8.65K |
|
722
PUT
Vertex Pharmaceuticals
VRTX
$119B
| $264K | 0.02% |
110
-96
| -47% | -$8.68K |
|
|
GG.WS.A
723
PUT
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $264K | 0.02% |
1,780
-127
| -7% | -$18.8K |
|
724
CALL
Danaher
DHR
$130B
| $262K | 0.02% |
1,396
+868
| +164% | +$51.7K |
|
725
ProShares UltraShort Euro
EUO
$35.6M
| $262K | 0.02% |
+11,339
| New | +$280K |
|
Similar funds
Simplex Trading's Q1 2016 Portfolio in Review
As of Q1 2016, Simplex Trading held 7,084 positions worth $1.25B, down 1.8% from $1.28B the previous quarter. Its ten largest holdings account for 17% of the portfolio.
Simplex Trading's Q1 2016 filing shows 1,678 new, 2,214 increased, 1,528 reduced and 1,505 closed positions. Its largest new stake was Broadcom: 2,493,400 shares worth $38.5M. The largest sale was Apple, an estimated $34.2M.
By sector, the portfolio is most concentrated in Technology at 7.6% of assets, up from 7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
- Simplex Trading's largest Q1 2016 buy was Broadcom: 2,493,400 shares worth $38.5M.
- Simplex Trading added most to Citigroup in Q1 2016, an estimated $8.7M increase.
- Simplex Trading's biggest Q1 2016 reduction was Booking.com, cutting an estimated $12.1M.
- Simplex Trading fully exited Apple in Q1 2016, selling an estimated $34.2M.
- Simplex Trading's ten largest holdings make up 17% of its $1.25B portfolio in Q1 2016.
- Simplex Trading opened 1,678 new positions and closed 1,505 in Q1 2016.
- Simplex Trading's portfolio value fell 1.8% quarter-over-quarter to $1.25B.
Based on Simplex Trading's 13F filing for Q1 2016, filed 14 Apr 2016.