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 | |
|---|---|---|---|---|---|---|
26
HCA Healthcare
HCA
$82.8B
| $7.41M | 0.62% |
81,626
+54,693
| +203% | +$4.38M |
|
27
Amazon
AMZN
$2.66T
| $7.25M | 0.61% |
+334,220
| New | +$6.99M |
|
28
Broadcom
AVGO
$1.84T
| $7.2M | 0.6% |
+541,500
| New | +$7.1M |
|
29
Chipotle Mexican Grill
CMG
$42.7B
| $6.51M | 0.55% |
538,050
+271,750
| +102% | +$3.44M |
|
30
PUT
Alibaba
BABA
$283B
| $6.46M | 0.54% |
6,544
+70
| +1% | +$6.02K |
|
31
American Airlines Group
AAL
$10.1B
| $6.02M | 0.5% |
+150,839
| New | +$6.88M |
|
32
Salesforce
CRM
$139B
| $6.01M | 0.5% |
+86,301
| New | +$6.14M |
|
33
Walmart Inc
WMT
$878B
| $5.79M | 0.48% |
244,701
+8,259
| +3% | +$211K |
|
34
PUT
Netflix
NFLX
$286B
| $5.78M | 0.48% |
396,060
+217,350
| +122% | +$1.82M |
|
|
35
CALL
State Street SPDR S&P 500 ETF Trust
SPY
$787B
| $5.73M | 0.48% |
9,095
-5,791
| -39% | -$1.22M |
|
|
36
PUT
Apple
AAPL
$4.81T
| $5.35M | 0.45% |
26,032
-8,188
| -24% | -$262K |
|
|
QIHU
37
DELISTED
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
| $5.26M | 0.44% |
77,776
+59,411
| +324% | +$3.58M |
|
38
CALL
Booking.com
BKNG
$139B
| $4.88M | 0.41% |
41,850
+14,050
| +51% | +$670K |
|
39
UnitedHealth
UNH
$396B
| $4.76M | 0.4% |
39,026
+12,417
| +47% | +$1.47M |
|
|
40
CALL
Meta Platforms (Facebook)
META
$1.63T
| $4.75M | 0.4% |
4,857
-2,426
| -33% | -$198K |
|
41
American Express
AXP
$239B
| $4.55M | 0.38% |
58,503
+40,704
| +229% | +$3.23M |
|
42
Viatris
VTRS
$20.5B
| $4.53M | 0.38% |
66,742
+58,926
| +754% | +$4.16M |
|
|
UCD
43
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $4.12M | 0.35% |
5,127
+3,723
| +265% | +$184K |
|
|
44
Intel
INTC
$530B
| $4.12M | 0.35% |
135,473
-155,910
| -54% | -$5.04M |
|
45
Qualcomm
QCOM
$183B
| $4.09M | 0.34% |
65,255
+17,070
| +35% | +$1.16M |
|
46
Boeing
BA
$161B
| $4.08M | 0.34% |
29,427
+9,004
| +44% | +$1.31M |
|
|
UCD
47
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $3.93M | 0.33% |
5,685
+3,812
| +204% | +$189K |
|
48
PUT
GoPro
GPRO
$125M
| $3.79M | 0.32% |
3,950
-355
| -8% | -$18.2K |
|
49
CALL
Gilead Sciences
GILD
$162B
| $3.73M | 0.31% |
4,729
-2,008
| -30% | -$219K |
|
50
Yelp
YELP
$1.42B
| $3.6M | 0.3% |
83,645
+47,240
| +130% | +$2.19M |
|
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.