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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
PINC
2801
CALL
DELISTED
Premier
PINC
| $412K | ﹤0.01% |
126
+61
| +94% | +$1.99K |
|
|
AXE
2802
CALL
DELISTED
Anixter International Inc
AXE
| $412K | ﹤0.01% |
47
-78
| -62% | -$7.38K |
|
2803
Equifax
EFX
$20.3B
| $411K | ﹤0.01% |
+3,447
| New | +$501K |
|
2804
Hilltop Holdings
HTH
$2.29B
| $411K | ﹤0.01% |
+27,245
| New | +$577K |
|
2805
CALL
KeyCorp
KEY
$24.3B
| $411K | ﹤0.01% |
397
-1,926
| -83% | -$32K |
|
2806
CALL
Ashland
ASH
$3.04B
| $410K | ﹤0.01% |
82
-268
| -77% | -$18.4K |
|
|
SAND
2807
DELISTED
Sandstorm Gold
SAND
| $410K | ﹤0.01% |
82,028
+71,495
| +679% | +$457K |
|
2808
AMN Healthcare
AMN
$1.28B
| $409K | ﹤0.01% |
7,091
+5,490
| +343% | +$376K |
|
2809
PUT
Gold Fields
GFI
$29.2B
| $409K | ﹤0.01% |
862
-899
| -51% | -$5.49K |
|
|
EQC
2810
PUT
DELISTED
Equity Commonwealth
EQC
| $409K | ﹤0.01% |
+129
| New | +$4.13K |
|
|
ACIA
2811
PUT
DELISTED
Acacia Communications Inc
ACIA
| $409K | ﹤0.01% |
61
-374
| -86% | -$25.3K |
|
2812
PUT
ICICI Bank
IBN
$106B
| $408K | ﹤0.01% |
481
+337
| +234% | +$4.46K |
|
|
NS
2813
PUT
DELISTED
NuStar Energy L.P.
NS
| $408K | ﹤0.01% |
476
+184
| +63% | +$4K |
|
2814
CALL
Flex
FLEX
$43.4B
| $407K | ﹤0.01% |
646
-685
| -51% | -$5.93K |
|
2815
CALL
Yeti Holdings
YETI
$3.82B
| $407K | ﹤0.01% |
209
-105
| -33% | -$3.11K |
|
|
TWOU
2816
CALL
DELISTED
2U Inc
TWOU
| $407K | ﹤0.01% |
6
+2
| +50% | +$1.35K |
|
2817
CALL
Dillards
DDS
$8.87B
| $406K | ﹤0.01% |
110
-123
| -53% | -$7.19K |
|
|
GAP
2818
CALL
The Gap Inc
GAP
$6.84B
| $406K | ﹤0.01% |
577
+103
| +22% | +$1.53K |
|
2819
The Greenbrier Companies
GBX
$1.61B
| $405K | ﹤0.01% |
22,856
+22,260
| +3,735% | +$528K |
|
|
BERY
2820
DELISTED
Berry Global Group, Inc.
BERY
| $405K | ﹤0.01% |
13,093
-27,698
| -68% | -$1.02M |
|
|
COR
2821
CALL
DELISTED
Coresite Realty Corporation
COR
| $405K | ﹤0.01% |
35
-5
| -13% | -$557 |
|
|
INFN
2822
CALL
DELISTED
Infinera Corporation Common Stock
INFN
| $404K | ﹤0.01% |
764
+139
| +22% | +$954 |
|
|
SA
2823
Seabridge Gold
SA
$2.8B
| $403K | ﹤0.01% |
43,195
+27,012
| +167% | +$320K |
|
2824
CALL
3D Systems Corp
DDD
$420M
| $402K | ﹤0.01% |
522
+153
| +41% | +$1.49K |
|
|
2825
PUT
Dillards
DDS
$8.87B
| $402K | ﹤0.01% |
109
-129
| -54% | -$7.54K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.