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 |
Alphabet (Google) Class C
GOOG
|
+$54.6M |
| 2 |
Apple
AAPL
|
+$29.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$15.7M |
| 4 |
IBM
IBM
|
+$13.8M |
| 5 |
Baidu
BIDU
|
+$10.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$10.1M |
| 2 |
McDonald's
MCD
|
+$8.46M |
| 3 |
Ralph Lauren
RL
|
+$5.36M |
| 4 |
Intel
INTC
|
+$5.04M |
| 5 |
WBA
Walgreens Boots Alliance
WBA
|
+$4.76M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 14.27% |
| 2 | Technology | 10.3% |
| 3 | Healthcare | 7.76% |
| 4 | Consumer Discretionary | 6.32% |
| 5 | Financials | 5.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ASRT
776
DELISTED
Assertio
ASRT
| $207K | 0.02% |
+161
| New | +$221K |
|
777
CALL
F5
FFIV
$21.9B
| $207K | 0.02% |
356
+61
| +21% | +$7.5K |
|
778
CALL
3M
MMM
$87.5B
| $207K | 0.02% |
731
+460
| +170% | +$61.7K |
|
779
PUT
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $206K | 0.02% |
505
+314
| +164% | +$25.1K |
|
780
PUT
GSK
GSK
$102B
| $206K | 0.02% |
382
+200
| +110% | +$11.3K |
|
|
YELL
781
DELISTED
Yellow Corporation Common Stock
YELL
| $206K | 0.02% |
15,924
-1,853
| -10% | -$27.6K |
|
782
PUT
BlackBerry
BB
$5.06B
| $205K | 0.02% |
890
+713
| +403% | +$6.91K |
|
783
CALL
Community Health Systems
CYH
$392M
| $205K | 0.02% |
445
+337
| +312% | +$15.1K |
|
|
EXAM
784
DELISTED
EXAMWORKS GROUP INC COM STK (DE)
EXAM
| $205K | 0.02% |
+5,257
| New | +$216K |
|
|
DTV
785
CALL
DELISTED
DIRECTV COM STK (DE)
DTV
| $205K | 0.02% |
553
+481
| +668% | +$43.5K |
|
|
DFS
786
DELISTED
Discover Financial Services
DFS
| $204K | 0.02% |
3,556
-9,691
| -73% | -$569K |
|
787
PUT
United States Natural Gas Fund
UNG
$473M
| $204K | 0.02% |
27
-4
| -13% | -$862 |
|
|
CEB
788
DELISTED
CEB Inc.
CEB
| $204K | 0.02% |
2,354
+2,345
| +26,056% | +$199K |
|
789
Maximus
MMS
$3.02B
| $203K | 0.02% |
3,100
+3,024
| +3,979% | +$198K |
|
790
CALL
Vipshop
VIPS
$6.92B
| $202K | 0.02% |
957
+595
| +164% | +$15.8K |
|
791
PUT
Lowe's Companies
LOW
$113B
| $201K | 0.02% |
145
+117
| +418% | +$8.34K |
|
792
PUT
Tyson Foods
TSN
$20B
| $201K | 0.02% |
272
+157
| +137% | +$6.45K |
|
793
Valmont Industries
VMI
$9.49B
| $201K | 0.02% |
1,693
+1,640
| +3,094% | +$202K |
|
|
EIGR
794
PUT
DELISTED
Eiger BioPharmaceuticals, Inc.
EIGR
| $201K | 0.02% |
1
| – | – |
|
|
FGP
795
DELISTED
Ferrellgas Partners, L.P.
FGP
| $201K | 0.02% |
8,944
+3,435
| +62% | +$81.6K |
|
796
Lear
LEA
$7.14B
| $200K | 0.02% |
+1,788
| New | +$205K |
|
797
TJX Companies
TJX
$170B
| $200K | 0.02% |
6,060
-1,432
| -19% | -$47.6K |
|
|
HCR
798
DELISTED
Hi-Crush Inc. Common Stock
HCR
| $199K | 0.02% |
6,511
+2,313
| +55% | +$76K |
|
|
TXTR
799
DELISTED
TEXTURA CORPORATION COM
TXTR
| $199K | 0.02% |
7,171
+7,096
| +9,461% | +$202K |
|
800
ProShares UltraShort Dow 30
DXD
$45.2M
| $198K | 0.02% |
+468
| New | +$192K |
|
Similar funds
Simplex Trading's Q2 2015 Portfolio in Review
As of Q2 2015, Simplex Trading held 6,639 positions worth $1.19B, up 39% from $860M the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $279M of net new capital in Q2 2015, opening 1,607 new positions and adding to 1,829 existing holdings. Its largest new stake was IBM: 85,948 shares worth $13.4M.
By sector, the portfolio is most concentrated in Communication Services at 14% of assets, up from 7.8% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Intel, an estimated $5.04M trimmed.
- Simplex Trading's largest Q2 2015 buy was IBM: 85,948 shares worth $13.4M.
- Simplex Trading added most to Alphabet (Google) Class C in Q2 2015, an estimated $54.6M increase.
- Simplex Trading's biggest Q2 2015 reduction was Intel, cutting an estimated $5.04M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2015, selling an estimated $10.1M.
- Simplex Trading's ten largest holdings make up 20% of its $1.19B portfolio in Q2 2015.
- Simplex Trading opened 1,607 new positions and closed 1,438 in Q2 2015.
- Simplex Trading's portfolio value rose 39% quarter-over-quarter to $1.19B.
Based on Simplex Trading's 13F filing for Q2 2015, filed 8 Jul 2015.