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 |
NVIDIA
NVDA
|
+$29.6M |
| 2 |
State Street Industrial Select Sector SPDR ETF
XLI
|
+$22.6M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$17.9M |
| 4 |
Netflix
NFLX
|
+$17.1M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$13.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Invesco QQQ Trust
QQQ
|
+$123M |
| 2 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$40.6M |
| 3 |
Walt Disney
DIS
|
+$25.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.5M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.5% |
| 2 | Communication Services | 0.5% |
| 3 | Healthcare | 0.35% |
| 4 | Industrials | 0.3% |
| 5 | Consumer Discretionary | 0.26% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3376
Regency Centers
REG
$14.8B
| $218K | ﹤0.01% |
+3,277
| New | +$220K |
|
3377
Invesco S&P 500 Equal Weight ETF
RSP
$98.2B
| $218K | ﹤0.01% |
2,023
-51
| -2% | -$5.4K |
|
|
SHOE
3378
CALL
Shoe Station Group
SHOE
$431M
| $218K | ﹤0.01% |
158
-284
| -64% | -$4.42K |
|
|
TPIC
3379
DELISTED
TPI Composites
TPIC
| $218K | ﹤0.01% |
8,841
+8,779
| +14,160% | +$225K |
|
3380
Village Farms International
VFF
$250M
| $218K | ﹤0.01% |
19,082
+10,637
| +126% | +$135K |
|
3381
CALL
Alcon
ALC
$33.7B
| $217K | ﹤0.01% |
+35
| New | +$2.06K |
|
3382
CALL
Cincinnati Financial
CINF
$28.3B
| $217K | ﹤0.01% |
21
-2
| -9% | -$192 |
|
3383
PUT
HF Sinclair
DINO
$16.1B
| $217K | ﹤0.01% |
47
-62
| -57% | -$2.77K |
|
3384
PUT
Eastman Chemical
EMN
$7.79B
| $217K | ﹤0.01% |
28
-412
| -94% | -$31.3K |
|
3385
Fate Therapeutics
FATE
$270M
| $217K | ﹤0.01% |
10,730
-7,683
| -42% | -$138K |
|
3386
PUT
Oshkosh
OSK
$9.51B
| $217K | ﹤0.01% |
26
+24
| +1,200% | +$1.89K |
|
3387
CALL
Southern Copper
SCCO
$140B
| $217K | ﹤0.01% |
60
-40
| -40% | -$1.39K |
|
3388
NCR Voyix
VYX
$1.19B
| $217K | ﹤0.01% |
11,417
-43,820
| -79% | -$815K |
|
|
SCTL
3389
DELISTED
Societal CDMO, Inc. Common Stock
SCTL
| $217K | ﹤0.01% |
23,863
+2,500
| +12% | +$20K |
|
3390
CALL
AngioDynamics
ANGO
$593M
| $216K | ﹤0.01% |
110
+109
| +10,900% | +$2.22K |
|
3391
CALL
Compañía de Minas Buenaventura
BVN
$7.72B
| $216K | ﹤0.01% |
130
+80
| +160% | +$1.27K |
|
3392
PUT
USA Compression Partners
USAC
$3.75B
| $216K | ﹤0.01% |
122
+18
| +17% | +$309 |
|
3393
PUT
Energous
WATT
$72.8M
| $216K | ﹤0.01% |
1
| – | – |
|
3394
Essex Property Trust
ESS
$18.9B
| $215K | ﹤0.01% |
+737
| New | +$212K |
|
3395
PUT
Icon
ICLR
$13.9B
| $215K | ﹤0.01% |
14
-4
| -22% | -$561 |
|
3396
Lamar Advertising Co
LAMR
$16.5B
| $215K | ﹤0.01% |
+2,672
| New | +$216K |
|
3397
PUT
Virtu Financial
VIRT
$5.11B
| $215K | ﹤0.01% |
99
-126
| -56% | -$2.96K |
|
3398
Advanced Micro Devices
AMD
$741B
| $214K | ﹤0.01% |
7,063
-74,934
| -91% | -$2.14M |
|
3399
CALL
Vanguard Consumer Discretionary ETF
VCR
$6.01B
| $214K | ﹤0.01% |
20
-142
| -88% | -$25.1K |
|
3400
WisdomTree
WT
$2.97B
| $214K | ﹤0.01% |
34,735
+3,186
| +10% | +$21.6K |
|
Similar funds
Simplex Trading's Q2 2019 Portfolio in Review
As of Q2 2019, Simplex Trading held 8,406 positions worth $36.6B, up 1.9% from $36B the previous quarter. Its ten largest holdings account for 35% of the portfolio.
Simplex Trading's Q2 2019 filing shows 1,261 new, 2,604 increased, 3,015 reduced and 1,301 closed positions. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M. The largest sale was Invesco QQQ Trust, an estimated $123M.
By sector, the portfolio is most concentrated in Technology at 0.5% of assets, up from 0.42% a quarter earlier, followed by Communication Services and Healthcare.
- Simplex Trading's largest Q2 2019 buy was iShares 20+ Year Treasury Bond ETF: 105,724 shares worth $14M.
- Simplex Trading added most to NVIDIA in Q2 2019, an estimated $29.6M increase.
- Simplex Trading's biggest Q2 2019 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $40.6M.
- Simplex Trading fully exited Invesco QQQ Trust in Q2 2019, selling an estimated $123M.
- Simplex Trading's ten largest holdings make up 35% of its $36.6B portfolio in Q2 2019.
- Simplex Trading opened 1,261 new positions and closed 1,301 in Q2 2019.
- Simplex Trading's portfolio value rose 1.9% quarter-over-quarter to $36.6B.
Based on Simplex Trading's 13F filing for Q2 2019, filed 26 Jul 2019.