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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1001
Goodyear
GT
$2.02B
| $276K | 0.01% |
+7,922
| New | +$273K |
|
1002
Banc of California
BANC
$3.3B
| $273K | 0.01% |
+12,730
| New | +$269K |
|
1003
Valero Energy
VLO
$90.6B
| $273K | 0.01% |
+4,047
| New | +$262K |
|
1004
CALL
Illumina
ILMN
$29.8B
| $272K | 0.01% |
172
+38
| +28% | +$6.58K |
|
1005
PUT
Petrobras
PBR
$122B
| $272K | 0.01% |
1,813
-5,954
| -77% | -$53.1K |
|
|
TVRD
1006
PUT
Tvardi Therapeutics
TVRD
$24M
| $272K | 0.01% |
42
+24
| +133% | +$15.2K |
|
|
VGR
1007
DELISTED
Vector Group Ltd.
VGR
| $271K | 0.01% |
20,752
-16,202
| -44% | -$213K |
|
1008
Equinix
EQIX
$102B
| $270K | 0.01% |
+630
| New | +$267K |
|
1009
Keysight
KEYS
$55.6B
| $270K | 0.01% |
6,952
+6,730
| +3,032% | +$254K |
|
1010
CALL
Lowe's Companies
LOW
$113B
| $270K | 0.01% |
3,012
+1,373
| +84% | +$112K |
|
1011
PUT
MetLife
MET
$59.5B
| $270K | 0.01% |
3,468
+192
| +6% | +$8.91K |
|
|
AKS
1012
DELISTED
AK Steel Holding Corp
AKS
| $269K | 0.01% |
41,052
+40,129
| +4,348% | +$252K |
|
1013
CALL
Deutsche Bank
DB
$65.3B
| $268K | 0.01% |
2,865
+805
| +39% | +$14.2K |
|
1014
Direxion Daily S&P Biotech Bull 3X ETF
LABU
$590M
| $268K | 0.01% |
213
+31
| +17% | +$31.3K |
|
1015
PUT
Marriott International
MAR
$96.1B
| $268K | 0.01% |
1,036
+448
| +76% | +$44.8K |
|
1016
Align Technology
ALGN
$12B
| $267K | 0.01% |
+1,780
| New | +$241K |
|
1017
CALL
Starbucks
SBUX
$118B
| $267K | 0.01% |
2,240
+47
| +2% | +$2.84K |
|
|
STRP
1018
PUT
DELISTED
Straight Path Communications Inc.
STRP
| $267K | 0.01% |
2,256
+1,855
| +463% | +$283K |
|
|
NAV
1019
DELISTED
Navistar International
NAV
| $266K | 0.01% |
+10,158
| New | +$268K |
|
|
MBLY
1020
CALL
DELISTED
Mobileye N.V.
MBLY
| $266K | 0.01% |
2,692
-1,539
| -36% | -$95.5K |
|
1021
CALL
Cigna
CI
$75.7B
| $265K | 0.01% |
430
+182
| +73% | +$29.2K |
|
1022
Visteon
VC
$2.67B
| $265K | 0.01% |
+2,599
| New | +$257K |
|
1023
PUT
Vertex Pharmaceuticals
VRTX
$120B
| $265K | 0.01% |
670
-586
| -47% | -$70.5K |
|
1024
AGCO
AGCO
$8.49B
| $264K | 0.01% |
+3,918
| New | +$250K |
|
1025
Cemex
CX
$17.7B
| $263K | 0.01% |
+28,019
| New | +$247K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.