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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
IMMU
2926
DELISTED
Immunomedics Inc
IMMU
| $493K | ﹤0.01% |
+13,921
| New | +$407K |
|
2927
CALL
Sinclair Inc
SBGI
$974M
| $491K | ﹤0.01% |
266
-26
| -9% | -$451 |
|
2928
WillScot Mobile Mini Holdings
WSC
$4.8B
| $491K | ﹤0.01% |
+39,978
| New | +$493K |
|
2929
PUT
XBiotech
XBIT
$69.2M
| $490K | ﹤0.01% |
358
-48
| -12% | -$675 |
|
|
ACIA
2930
PUT
DELISTED
Acacia Communications Inc
ACIA
| $490K | ﹤0.01% |
73
+12
| +20% | +$813 |
|
|
ARR
2931
CALL
Armour Residential REIT
ARR
$2.02B
| $489K | ﹤0.01% |
104
+92
| +767% | +$3.86K |
|
2932
CALL
Regenxbio
RGNX
$623M
| $489K | ﹤0.01% |
133
-16
| -11% | -$596 |
|
2933
PUT
Avnet
AVT
$7.33B
| $487K | ﹤0.01% |
175
-159
| -48% | -$4.41K |
|
2934
Direxion Daily CSI 300 China A Share Bull 2X ETF
CHAU
$90.3M
| $487K | ﹤0.01% |
21,358
+10,738
| +101% | +$212K |
|
2935
PUT
La-Z-Boy
LZB
$1.59B
| $487K | ﹤0.01% |
180
+164
| +1,025% | +$3.94K |
|
2936
CALL
Red Robin
RRGB
$134M
| $487K | ﹤0.01% |
478
+261
| +120% | +$3.29K |
|
|
MIK
2937
CALL
DELISTED
Michaels Stores, Inc
MIK
| $487K | ﹤0.01% |
690
+180
| +35% | +$706 |
|
2938
PUT
Cedar Fair
FUN
$1.78B
| $486K | ﹤0.01% |
177
-123
| -41% | -$3.5K |
|
2939
Hercules Capital
HTGC
$2.94B
| $486K | ﹤0.01% |
46,451
+13,639
| +42% | +$138K |
|
2940
CALL
MKS Inc
MKSI
$22.2B
| $486K | ﹤0.01% |
43
+9
| +26% | +$895 |
|
|
PRFT
2941
CALL
DELISTED
Perficient Inc
PRFT
| $486K | ﹤0.01% |
136
+132
| +3,300% | +$4.38K |
|
2942
CALL
Compugen
CGEN
$216M
| $485K | ﹤0.01% |
323
-102
| -24% | -$1.38K |
|
2943
CALL
Copa Holdings
CPA
$5.56B
| $485K | ﹤0.01% |
96
+37
| +63% | +$1.71K |
|
2944
CALL
Domo
DOMO
$166M
| $485K | ﹤0.01% |
151
+58
| +62% | +$1.29K |
|
|
TGNA
2945
DELISTED
TEGNA Inc
TGNA
| $485K | ﹤0.01% |
+43,543
| New | +$484K |
|
2946
PUT
Franklin Resources
BEN
$16.9B
| $484K | ﹤0.01% |
231
+123
| +114% | +$2.32K |
|
2947
PUT
Eagle Materials
EXP
$6.6B
| $484K | ﹤0.01% |
69
+68
| +6,800% | +$4.28K |
|
|
IDEX
2948
CALL
DELISTED
Ideanomics, Inc. Common Stock
IDEX
| $484K | ﹤0.01% |
+19
| New | +$2.2K |
|
|
COHR
2949
CALL
DELISTED
Coherent Inc
COHR
| $484K | ﹤0.01% |
37
-12
| -24% | -$1.57K |
|
2950
CALL
Antero Resources
AR
$10.9B
| $483K | ﹤0.01% |
1,902
+1,798
| +1,729% | +$4.71K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.