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 | |
|---|---|---|---|---|---|---|
|
ZGNX
1551
CALL
DELISTED
Zogenix, Inc.
ZGNX
| $1.44M | ﹤0.01% |
584
+260
| +80% | +$9.47K |
|
|
SNP
1552
DELISTED
CHINA PETROLEUM & CHEMICAL CORPORATION ADS (REP 100 ORDINARY H SHARES)
SNP
| $1.44M | ﹤0.01% |
29,615
+24,142
| +441% | +$1.28M |
|
1553
CALL
CBRE Group
CBRE
$40.9B
| $1.44M | ﹤0.01% |
382
+381
| +38,100% | +$21.1K |
|
|
EPAY
1554
PUT
DELISTED
Bottomline Technologies Inc
EPAY
| $1.44M | ﹤0.01% |
393
+369
| +1,538% | +$17K |
|
1555
Radware
RDWR
$1.25B
| $1.44M | ﹤0.01% |
68,319
+47,488
| +228% | +$1.12M |
|
|
PTR
1556
CALL
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $1.43M | ﹤0.01% |
398
+397
| +39,700% | +$16.7K |
|
1557
PUT
Eversource Energy
ES
$28.2B
| $1.43M | ﹤0.01% |
183
+118
| +182% | +$10.4K |
|
1558
CALL
Jazz Pharmaceuticals
JAZZ
$15.9B
| $1.43M | ﹤0.01% |
143
-66
| -32% | -$8.53K |
|
|
HUYA
1559
Huya Inc
HUYA
$554M
| $1.42M | ﹤0.01% |
84,044
+43,559
| +108% | +$809K |
|
1560
PUT
Stride
LRN
$3.69B
| $1.42M | ﹤0.01% |
753
+680
| +932% | +$12.5K |
|
1561
Weibo
WB
$1.91B
| $1.42M | ﹤0.01% |
42,895
+22,596
| +111% | +$957K |
|
1562
iShares Biotechnology ETF
IBB
$9.33B
| $1.42M | ﹤0.01% |
+13,150
| New | +$1.51M |
|
1563
CALL
Iron Mountain
IRM
$38.2B
| $1.42M | ﹤0.01% |
595
-374
| -39% | -$11.3K |
|
1564
CALL
McCormick & Company Non-Voting
MKC
$13.5B
| $1.41M | ﹤0.01% |
200
+26
| +15% | +$2.02K |
|
1565
CALL
Republic Services
RSG
$66.7B
| $1.41M | ﹤0.01% |
188
+30
| +19% | +$2.71K |
|
1566
PUT
Logitech
LOGI
$15.2B
| $1.41M | ﹤0.01% |
328
+299
| +1,031% | +$13K |
|
1567
PUT
Kohl's
KSS
$2.07B
| $1.41M | ﹤0.01% |
965
-1,288
| -57% | -$48.3K |
|
|
KL
1568
CALL
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $1.41M | ﹤0.01% |
475
-187
| -28% | -$6.84K |
|
1569
Global X Lithium & Battery Tech ETF
LIT
$1.49B
| $1.4M | ﹤0.01% |
64,696
+45,601
| +239% | +$1.26M |
|
1570
PUT
Bank of Montreal
BMO
$124B
| $1.4M | ﹤0.01% |
279
+246
| +745% | +$16.7K |
|
1571
Mattel
MAT
$4.16B
| $1.4M | ﹤0.01% |
+159,203
| New | +$1.95M |
|
1572
MetLife
MET
$60.4B
| $1.4M | ﹤0.01% |
45,885
+33,729
| +277% | +$1.5M |
|
|
NVO
1573
CALL
Novo Nordisk
NVO
$217B
| $1.4M | ﹤0.01% |
466
+8
| +2% | +$238 |
|
1574
Axsome Therapeutics
AXSM
$12.3B
| $1.4M | ﹤0.01% |
23,822
+21,109
| +778% | +$1.72M |
|
|
MYOK
1575
PUT
DELISTED
MyoKardia, Inc. Common Stock
MYOK
| $1.4M | ﹤0.01% |
298
+231
| +345% | +$14.8K |
|
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.