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 |
Alibaba
BABA
|
+$50.3M |
| 2 |
Boeing
BA
|
+$24.3M |
| 3 |
SPDR Gold Trust
GLD
|
+$18.3M |
| 4 |
Biogen
BIIB
|
+$15.9M |
| 5 |
FedEx
FDX
|
+$15.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$60.3M |
| 2 |
iShares Russell 2000 ETF
IWM
|
+$36.4M |
| 3 |
Netflix
NFLX
|
+$19M |
| 4 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$17.3M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.49% |
| 2 | Technology | 0.48% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.35% |
| 5 | Communication Services | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
CALL
Qualcomm
QCOM
$183B
| $46.3M | 0.13% |
6,065
-14,382
| -70% | -$1.08M |
|
102
CALL
ExxonMobil
XOM
$629B
| $45.8M | 0.13% |
6,493
+400
| +7% | +$28.9K |
|
103
CALL
Advanced Micro Devices
AMD
$888B
| $45.5M | 0.13% |
15,688
-914
| -6% | -$28.7K |
|
104
CALL
Micron Technology
MU
$1.1T
| $45.4M | 0.13% |
10,600
-2,670
| -20% | -$121K |
|
105
CALL
Salesforce
CRM
$139B
| $45.3M | 0.13% |
3,050
-983
| -24% | -$149K |
|
106
PUT
Chevron
CVX
$381B
| $43.9M | 0.12% |
3,701
-73
| -2% | -$8.87K |
|
107
CALL
Marathon Petroleum
MPC
$93.3B
| $43.7M | 0.12% |
7,193
+243
| +3% | +$12.8K |
|
108
PUT
Goldman Sachs
GS
$320B
| $43.5M | 0.12% |
2,099
-83
| -4% | -$17.4K |
|
109
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $43.2M | 0.12% |
3,994
-494
| -11% | -$14.8K |
|
|
JJT
110
CALL
DELISTED
iPath Series B Bloomberg Tin Subindex Total ReturnSM ETN
JJT
| $43.2M | 0.12% |
17,964
+3,787
| +27% | +$166K |
|
111
PUT
AB InBev
BUD
$158B
| $42.2M | 0.12% |
4,436
+4,069
| +1,109% | +$386K |
|
112
PUT
JPMorgan Chase
JPM
$918B
| $42.1M | 0.12% |
3,632
-2,517
| -41% | -$285K |
|
|
SHNY
113
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $41.5M | 0.12% |
12,259
-174
| -1% | -$589K |
|
114
CALL
Broadcom
AVGO
$1.84T
| $40M | 0.11% |
14,500
-14,720
| -50% | -$419K |
|
115
PUT
Ulta Beauty
ULTA
$21B
| $40M | 0.11% |
1,596
+787
| +97% | +$241K |
|
116
PUT
Amgen
AMGN
$198B
| $39.6M | 0.11% |
2,044
+701
| +52% | +$135K |
|
|
XLNX
117
PUT
DELISTED
Xilinx Inc
XLNX
| $38.9M | 0.11% |
4,056
-2,555
| -39% | -$280K |
|
118
CALL
Verizon
VZ
$183B
| $38.8M | 0.11% |
6,431
+1,613
| +33% | +$92.9K |
|
119
CALL
Caterpillar
CAT
$410B
| $38.8M | 0.11% |
3,072
+350
| +13% | +$44.5K |
|
120
CALL
AT&T
T
$155B
| $38.8M | 0.11% |
13,574
+2,798
| +26% | +$74.1K |
|
121
PUT
CVS Health
CVS
$141B
| $38.2M | 0.11% |
6,059
-131
| -2% | -$7.76K |
|
122
CALL
Medtronic
MDT
$107B
| $38M | 0.11% |
3,503
+651
| +23% | +$67.9K |
|
|
AABA
123
CALL
DELISTED
Altaba Inc
AABA
| $37.6M | 0.11% |
2,247
-1,983
| -47% | -$131K |
|
124
CALL
United Parcel Service
UPS
$96.2B
| $37.1M | 0.11% |
3,097
+795
| +35% | +$90.9K |
|
125
PUT
Baidu
BIDU
$36.8B
| $36.9M | 0.11% |
3,595
-1,764
| -33% | -$190K |
|
Similar funds
Simplex Trading's Q3 2019 Portfolio in Review
As of Q3 2019, Simplex Trading held 8,410 positions worth $35.2B, down 4.1% from $36.6B the previous quarter. Its ten largest holdings account for 33% of the portfolio.
Simplex Trading's Q3 2019 filing shows 1,312 new, 3,129 increased, 2,596 reduced and 1,163 closed positions. Its largest new stake was SPDR Gold Trust: 131,281 shares worth $18.2M. The largest sale was Alphabet (Google) Class C, an estimated $60.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.49% of assets, up from 0.26% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q3 2019 buy was SPDR Gold Trust: 131,281 shares worth $18.2M.
- Simplex Trading added most to Alibaba in Q3 2019, an estimated $50.3M increase.
- Simplex Trading's biggest Q3 2019 reduction was Alphabet (Google) Class C, cutting an estimated $60.3M.
- Simplex Trading fully exited iShares Russell 2000 ETF in Q3 2019, selling an estimated $36.4M.
- Simplex Trading's ten largest holdings make up 33% of its $35.2B portfolio in Q3 2019.
- Simplex Trading opened 1,312 new positions and closed 1,163 in Q3 2019.
- Simplex Trading's portfolio value fell 4.1% quarter-over-quarter to $35.2B.
Based on Simplex Trading's 13F filing for Q3 2019, filed 15 Oct 2019.