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 | |
|---|---|---|---|---|---|---|
2051
CALL
SFL Corp
SFL
$1.59B
| $830K | ﹤0.01% |
877
+697
| +387% | +$8.63K |
|
2052
PUT
ACM Research
ACMR
$5.83B
| $829K | ﹤0.01% |
+840
| New | +$9.06K |
|
2053
CALL
YPF
YPF
$20.2B
| $829K | ﹤0.01% |
1,990
-1,583
| -44% | -$12.8K |
|
2054
PUT
Teradyne
TER
$54.8B
| $828K | ﹤0.01% |
153
-9
| -6% | -$571 |
|
2055
iShares US Home Construction ETF
ITB
$2.41B
| $827K | ﹤0.01% |
+28,612
| New | +$1.23M |
|
2056
CALL
Liberty Global Class C
LBTYK
$3.27B
| $827K | ﹤0.01% |
521
-65
| -11% | -$1.22K |
|
2057
CALL
WisdomTree US Total Dividend Fund
DTD
$1.65B
| $826K | ﹤0.01% |
742
-190
| -20% | -$9.21K |
|
|
TRHC
2058
PUT
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
| $826K | ﹤0.01% |
158
+146
| +1,217% | +$7.9K |
|
2059
PUT
BJ's Restaurants
BJRI
$1.41B
| $825K | ﹤0.01% |
594
-194
| -25% | -$6.23K |
|
2060
PUT
Barclays
BCS
$94.1B
| $824K | ﹤0.01% |
1,820
+1,648
| +958% | +$12.7K |
|
2061
Zoetis
ZTS
$31.6B
| $824K | ﹤0.01% |
+7,004
| New | +$922K |
|
2062
CALL
Primerica
PRI
$9.81B
| $822K | ﹤0.01% |
93
+71
| +323% | +$8.12K |
|
2063
CALL
W.W. Grainger
GWW
$65.3B
| $820K | ﹤0.01% |
33
-31
| -48% | -$9.16K |
|
2064
PUT
Stanley Black & Decker
SWK
$14.2B
| $820K | ﹤0.01% |
82
-70
| -46% | -$10K |
|
2065
PUT
Cerus
CERS
$587M
| $819K | ﹤0.01% |
1,763
+1,720
| +4,000% | +$7.79K |
|
2066
Popular Inc
BPOP
$11B
| $818K | ﹤0.01% |
23,380
+23,271
| +21,350% | +$1.15M |
|
2067
HCA Healthcare
HCA
$84.8B
| $817K | ﹤0.01% |
+9,095
| New | +$1.18M |
|
2068
CALL
Trex
TREX
$4.51B
| $817K | ﹤0.01% |
204
+38
| +23% | +$1.78K |
|
2069
PUT
Vistra
VST
$55.1B
| $817K | ﹤0.01% |
512
+431
| +532% | +$8.77K |
|
|
BLDP
2070
CALL
Ballard Power Systems
BLDP
$874M
| $816K | ﹤0.01% |
1,073
-39
| -4% | -$379 |
|
2071
CALL
Icon
ICLR
$12.8B
| $816K | ﹤0.01% |
60
+29
| +94% | +$4.64K |
|
2072
CALL
IPG Photonics
IPGP
$3.89B
| $816K | ﹤0.01% |
74
-59
| -44% | -$7.72K |
|
2073
Yeti Holdings
YETI
$3.82B
| $815K | ﹤0.01% |
41,763
+20,488
| +96% | +$607K |
|
2074
PUT
Celanese
CE
$5.09B
| $814K | ﹤0.01% |
111
-105
| -49% | -$10.4K |
|
2075
PUT
DHT Holdings
DHT
$2.97B
| $814K | ﹤0.01% |
1,062
+854
| +411% | +$5.41K |
|
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.