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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
51
Home Depot
HD
$332B
| $6.88M | 0.3% |
46,882
+6,840
| +17% | +$970K |
|
|
52
CALL
Citigroup
C
$216B
| $6.83M | 0.3% |
13,000
+4,414
| +51% | +$261K |
|
|
UCD
53
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $6.68M | 0.29% |
17,033
-38
| -0.2% | -$14.9K |
|
54
Charter Communications
CHTR
$15.9B
| $6.51M | 0.28% |
+19,903
| New | +$6.34M |
|
55
Las Vegas Sands
LVS
$30.4B
| $6.42M | 0.28% |
112,457
+20,780
| +23% | +$1.13M |
|
56
CALL
Berkshire Hathaway Class B
BRK.B
$1.06T
| $6.29M | 0.27% |
2,496
-391
| -14% | -$65.4K |
|
|
RTN
57
DELISTED
Raytheon Company
RTN
| $6.29M | 0.27% |
+41,216
| New | +$6.2M |
|
58
State Street Financial Select Sector SPDR ETF
XLF
$55.4B
| $6.18M | 0.27% |
260,639
+150,658
| +137% | +$3.61M |
|
59
Chevron
CVX
$381B
| $6.12M | 0.26% |
57,023
-18,468
| -24% | -$2.07M |
|
60
JPMorgan Chase
JPM
$901B
| $6.09M | 0.26% |
69,350
-34,059
| -33% | -$3M |
|
61
Biogen
BIIB
$29.5B
| $6.09M | 0.26% |
22,270
+4,340
| +24% | +$1.23M |
|
62
Broadcom
AVGO
$1.84T
| $6.09M | 0.26% |
+277,980
| New | +$5.72M |
|
63
General Dynamics
GD
$100B
| $6.02M | 0.26% |
+32,152
| New | +$5.94M |
|
|
MBLY
64
DELISTED
Mobileye N.V.
MBLY
| $5.98M | 0.26% |
97,398
+78,264
| +409% | +$3.76M |
|
65
Dollar Tree
DLTR
$24.3B
| $5.86M | 0.25% |
+74,670
| New | +$5.74M |
|
66
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $5.78M | 0.25% |
+55,848
| New | +$5.78M |
|
67
Petrobras
PBR
$119B
| $5.76M | 0.25% |
595,011
+544,865
| +1,087% | +$5.6M |
|
|
TIF
68
DELISTED
Tiffany & Co.
TIF
| $5.72M | 0.25% |
+60,018
| New | +$5.12M |
|
|
SYT
69
DELISTED
Syngenta Ag
SYT
| $5.37M | 0.23% |
+60,732
| New | +$5.2M |
|
70
Adobe
ADBE
$90.3B
| $5.33M | 0.23% |
40,990
-21,031
| -34% | -$2.47M |
|
71
Illumina
ILMN
$27.9B
| $5.33M | 0.23% |
32,128
+7,026
| +28% | +$1.11M |
|
72
PUT
Alphabet (Google) Class A
GOOGL
$4.24T
| $5.31M | 0.23% |
83,160
-13,580
| -14% | -$571K |
|
|
73
PUT
Apple
AAPL
$4.81T
| $5.3M | 0.23% |
64,016
-8,240
| -11% | -$271K |
|
74
PUT
Gilead Sciences
GILD
$165B
| $5.26M | 0.23% |
12,888
+6,530
| +103% | +$459K |
|
75
CALL
Netflix
NFLX
$286B
| $5.23M | 0.23% |
40,270
-25,960
| -39% | -$364K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.