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 | |
|---|---|---|---|---|---|---|
3676
PUT
Rayonier Advanced Materials
RYAM
$560M
| $5K | ﹤0.01% |
24
-55
| -70% | -$906 |
|
3677
Schwab US Broad Market ETF
SCHB
$42.6B
| $5K | ﹤0.01% |
+684
| New | +$5.84K |
|
3678
SFL Corp
SFL
$1.63B
| $5K | ﹤0.01% |
350
-2,431
| -87% | -$38.9K |
|
3679
CALL
Snap-on
SNA
$21.5B
| $5K | ﹤0.01% |
16
+11
| +220% | +$1.7K |
|
|
SVC
3680
PUT
Service Properties Trust
SVC
$1.08B
| $5K | ﹤0.01% |
4
-5
| -56% | -$760 |
|
3681
CALL
Terex
TEX
$7.53B
| $5K | ﹤0.01% |
225
+117
| +108% | +$3.09K |
|
3682
CALL
Travel + Leisure Co
TNL
$4.77B
| $5K | ﹤0.01% |
109
-57
| -34% | -$2.23K |
|
3683
CALL
Tractor Supply
TSCO
$16.4B
| $5K | ﹤0.01% |
95
-80
| -46% | -$1.42K |
|
3684
CALL
Trane Technologies
TT
$99.7B
| $5K | ﹤0.01% |
31
+20
| +182% | +$1.37K |
|
|
TTSH
3685
CALL
DELISTED
Tile Shop Holdings
TTSH
| $5K | ﹤0.01% |
72
+42
| +140% | +$565 |
|
3686
CALL
Take-Two Interactive
TTWO
$46.7B
| $5K | ﹤0.01% |
19
-5
| -21% | -$131 |
|
3687
CALL
Urban Edge Properties
UE
$2.91B
| $5K | ﹤0.01% |
+20
| New | +$450 |
|
3688
CALL
Vuzix
VUZI
$182M
| $5K | ﹤0.01% |
+51
| New | +$315 |
|
3689
WEC Energy
WEC
$36.3B
| $5K | ﹤0.01% |
+117
| New | +$5.62K |
|
3690
W.P. Carey
WPC
$16.7B
| $5K | ﹤0.01% |
98
-2,893
| -97% | -$181K |
|
3691
PUT
Williams-Sonoma
WSM
$27.7B
| $5K | ﹤0.01% |
278
+172
| +162% | +$6.73K |
|
|
WW
3692
CALL
DELISTED
WW International
WW
| $5K | ﹤0.01% |
202
-11
| -5% | -$73 |
|
|
XIN
3693
DELISTED
Xinyuan Real Estate
XIN
| $5K | ﹤0.01% |
160
-395
| -71% | -$12.6K |
|
|
XNET
3694
PUT
Xunlei
XNET
$338M
| $5K | ﹤0.01% |
+178
| New | +$1.73K |
|
3695
CALL
XPO
XPO
$23.6B
| $5K | ﹤0.01% |
185
-64
| -26% | -$1.04K |
|
|
3696
PUT
XPO
XPO
$23.6B
| $5K | ﹤0.01% |
142
-352
| -71% | -$5.71K |
|
3697
Xylem
XYL
$28.3B
| $5K | ﹤0.01% |
+149
| New | +$5.42K |
|
3698
Zumiez
ZUMZ
$330M
| $5K | ﹤0.01% |
204
-2,203
| -92% | -$67.7K |
|
|
SMC
3699
PUT
Summit Midstream
SMC
$421M
| $5K | ﹤0.01% |
+3
| New | +$1.49K |
|
|
INVX
3700
Innovex International
INVX
$1.81B
| $5K | ﹤0.01% |
77
-1,030
| -93% | -$77.5K |
|
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.