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 | |
|---|---|---|---|---|---|---|
|
26
CALL
NVIDIA
NVDA
$5.02T
| $245M | 0.43% |
372,440
-4,120
| -1% | -$26K |
|
|
27
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $241M | 0.42% |
10,978
+1,842
| +20% | +$489K |
|
28
PUT
Meta Platforms (Facebook)
META
$1.63T
| $234M | 0.41% |
14,024
+4,628
| +49% | +$906K |
|
29
CALL
Boeing
BA
$161B
| $232M | 0.41% |
15,563
+7,971
| +105% | +$2.18M |
|
30
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $228M | 0.4% |
61,858
+30,692
| +98% | +$840K |
|
|
31
PUT
NVIDIA
NVDA
$5.02T
| $209M | 0.37% |
316,400
-87,760
| -22% | -$554K |
|
|
32
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $207M | 0.37% |
9,446
+2,272
| +32% | +$604K |
|
|
33
PUT
Boeing
BA
$161B
| $199M | 0.35% |
13,317
+8,182
| +159% | +$2.24M |
|
|
34
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $190M | 0.34% |
72,935
+39,413
| +118% | +$1.08M |
|
35
PUT
Walt Disney
DIS
$167B
| $183M | 0.32% |
18,911
+5,349
| +39% | +$676K |
|
|
36
PUT
Netflix
NFLX
$286B
| $171M | 0.3% |
45,580
-28,830
| -39% | -$1.02M |
|
37
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $157M | 0.28% |
41,670
+21,874
| +110% | +$1.17M |
|
38
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $157M | 0.28% |
119,650
-144,550
| -55% | -$2.29M |
|
39
PUT
Adobe
ADBE
$90.3B
| $155M | 0.27% |
4,873
+1,248
| +34% | +$427K |
|
40
PUT
Visa
V
$677B
| $154M | 0.27% |
9,578
+2,716
| +40% | +$512K |
|
|
41
CALL
Visa
V
$677B
| $154M | 0.27% |
9,575
+5,364
| +127% | +$1.01M |
|
|
42
CALL
Netflix
NFLX
$286B
| $152M | 0.27% |
40,540
-62,330
| -61% | -$2.21M |
|
|
43
CALL
Walt Disney
DIS
$167B
| $128M | 0.23% |
13,258
-2,474
| -16% | -$313K |
|
44
PUT
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.07B
| $126M | 0.22% |
32,596
+28,113
| +627% | +$850K |
|
45
PUT
Mastercard
MA
$476B
| $118M | 0.21% |
4,879
+597
| +14% | +$177K |
|
|
JJT
46
CALL
DELISTED
iPath Series B Bloomberg Tin Subindex Total ReturnSM ETN
JJT
| $110M | 0.19% |
23,785
+10,141
| +74% | +$426K |
|
47
PUT
Uber
UBER
$146B
| $109M | 0.19% |
39,201
+28,096
| +253% | +$925K |
|
48
PUT
iShares MSCI Australia ETF
EWA
$1.34B
| $102M | 0.18% |
42,452
+20,277
| +91% | +$415K |
|
49
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $102M | 0.18% |
27,550
-8,817
| -24% | -$727K |
|
50
PUT
Home Depot
HD
$331B
| $102M | 0.18% |
5,446
+910
| +20% | +$200K |
|
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.