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 | |
|---|---|---|---|---|---|---|
2476
CALL
Haemonetics
HAE
$3.58B
| $707K | ﹤0.01% |
79
-80
| -50% | -$8.08K |
|
2477
PUT
MACOM Technology Solutions
MTSI
$20.4B
| $707K | ﹤0.01% |
206
-312
| -60% | -$9.11K |
|
2478
Nektar Therapeutics
NKTR
$2.39B
| $706K | ﹤0.01% |
2,035
-476
| -19% | -$149K |
|
2479
PUT
Halozyme
HALO
$9.72B
| $705K | ﹤0.01% |
263
+108
| +70% | +$2.44K |
|
2480
PUT
Republic Services
RSG
$66.7B
| $705K | ﹤0.01% |
86
+72
| +514% | +$5.8K |
|
2481
CALL
Vicor
VICR
$9.62B
| $705K | ﹤0.01% |
98
+25
| +34% | +$1.4K |
|
|
DVAX
2482
PUT
DELISTED
Dynavax Technologies
DVAX
| $704K | ﹤0.01% |
794
+413
| +108% | +$2.09K |
|
2483
PUT
Ovintiv
OVV
$17.5B
| $704K | ﹤0.01% |
739
+274
| +59% | +$1.91K |
|
2484
Progress Software
PRGS
$1.55B
| $704K | ﹤0.01% |
+18,179
| New | +$693K |
|
2485
PUT
Assured Guaranty
AGO
$3.78B
| $703K | ﹤0.01% |
288
+57
| +25% | +$1.55K |
|
2486
PUT
Targa Resources
TRGP
$60.4B
| $702K | ﹤0.01% |
350
+142
| +68% | +$2.13K |
|
2487
CALL
ACI Worldwide
ACIW
$5.72B
| $701K | ﹤0.01% |
260
+245
| +1,633% | +$6.4K |
|
2488
CALL
Coeur Mining
CDE
$15.6B
| $701K | ﹤0.01% |
1,380
+141
| +11% | +$642 |
|
2489
CALL
Gen Digital
GEN
$15.6B
| $701K | ﹤0.01% |
354
-2,207
| -86% | -$44.9K |
|
|
VTLE
2490
PUT
DELISTED
Vital Energy
VTLE
| $701K | ﹤0.01% |
+507
| New | +$7.93K |
|
|
STAY
2491
DELISTED
Extended Stay America, Inc. Paired Share Unit
STAY
| $701K | ﹤0.01% |
62,646
+35,497
| +131% | +$372K |
|
2492
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $697K | ﹤0.01% |
58
-70
| -55% | -$7.54K |
|
2493
Thermo Fisher Scientific
TMO
$211B
| $697K | ﹤0.01% |
1,924
-8,228
| -81% | -$2.76M |
|
2494
Dow Inc
DOW
$21.6B
| $696K | ﹤0.01% |
+17,082
| New | +$625K |
|
2495
Ironwood Pharmaceuticals
IRWD
$611M
| $696K | ﹤0.01% |
67,506
+45,921
| +213% | +$470K |
|
2496
PUT
Revvity
RVTY
$12.3B
| $696K | ﹤0.01% |
71
+69
| +3,450% | +$6.31K |
|
2497
Chegg
CHGG
$108M
| $695K | ﹤0.01% |
+10,336
| New | +$552K |
|
2498
PUT
Genuine Parts
GPC
$17.1B
| $695K | ﹤0.01% |
80
-74
| -48% | -$5.84K |
|
|
LOGM
2499
CALL
DELISTED
LogMein, Inc.
LOGM
| $695K | ﹤0.01% |
82
-83
| -50% | -$7.04K |
|
2500
iShares Core S&P 500 ETF
IVV
$876B
| $694K | ﹤0.01% |
+2,241
| New | +$658K |
|
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.