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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2551
CALL
Forestar Group
FOR
$1.44B
| $42K | ﹤0.01% |
523
+454
| +658% | +$6.77K |
|
2552
PUT
Huazhu Hotels Group
HTHT
$12.4B
| $42K | ﹤0.01% |
628
+508
| +423% | +$9.35K |
|
2553
PUT
Omeros
OMER
$709M
| $42K | ﹤0.01% |
223
-293
| -57% | -$5.11K |
|
2554
PUT
PNC Financial Services
PNC
$100B
| $42K | ﹤0.01% |
955
-2,805
| -75% | -$338K |
|
2555
PUT
Ferrari
RACE
$63.3B
| $42K | ﹤0.01% |
301
+88
| +41% | +$7.21K |
|
2556
CALL
RCI Hospitality Holdings
RICK
$199M
| $42K | ﹤0.01% |
+101
| New | +$1.99K |
|
2557
State Street SPDR S&P Oil & Gas Equipment & Services ETF
XES
$380M
| $42K | ﹤0.01% |
275
-1,484
| -84% | -$256K |
|
2558
PUT
XPO
XPO
$25B
| $42K | ﹤0.01% |
1,278
-567
| -31% | -$10.6K |
|
|
ADXS
2559
PUT
DELISTED
Advaxis Inc
ADXS
| $42K | ﹤0.01% |
19
+12
| +171% | +$1.4K |
|
|
EMES
2560
CALL
DELISTED
Emerge Energy Services LP
EMES
| $42K | ﹤0.01% |
217
-62
| -22% | -$715 |
|
|
ATHN
2561
PUT
DELISTED
Athenahealth, Inc.
ATHN
| $42K | ﹤0.01% |
102
-21
| -17% | -$2.62K |
|
|
BWP
2562
CALL
DELISTED
Boardwalk Pipeline Partners
BWP
| $42K | ﹤0.01% |
418
+89
| +27% | +$1.6K |
|
2563
PUT
Cigna
CI
$76.6B
| $41K | ﹤0.01% |
367
+293
| +396% | +$47.1K |
|
2564
PUT
Franco-Nevada
FNV
$41.4B
| $41K | ﹤0.01% |
105
-59
| -36% | -$4.17K |
|
2565
Harmonic Inc
HLIT
$1.21B
| $41K | ﹤0.01% |
7,904
+7,433
| +1,578% | +$40K |
|
2566
HUB Group
HUBG
$3.01B
| $41K | ﹤0.01% |
+2,142
| New | +$40.8K |
|
2567
PUT
Investcorp Credit Management BDC
ICMB
$11.3M
| $41K | ﹤0.01% |
+1,007
| New | +$10.3K |
|
2568
Itaú Unibanco
ITUB
$91.3B
| $41K | ﹤0.01% |
+7,739
| New | +$43.4K |
|
2569
CALL
The Mosaic Company
MOS
$7.09B
| $41K | ﹤0.01% |
523
-1,147
| -69% | -$28.2K |
|
|
ODP
2570
CALL
DELISTED
ODP
ODP
| $41K | ﹤0.01% |
44
+7
| +19% | +$360 |
|
2571
PUT
Opko Health
OPK
$921M
| $41K | ﹤0.01% |
252
+58
| +30% | +$407 |
|
2572
Insulet
PODD
$11.3B
| $41K | ﹤0.01% |
804
+396
| +97% | +$17.2K |
|
2573
UGI
UGI
$8B
| $41K | ﹤0.01% |
+847
| New | +$42.1K |
|
2574
ProShares Ultra Euro
ULE
$4.29M
| $41K | ﹤0.01% |
+2,584
| New | +$39.1K |
|
|
VNET
2575
VNET Group
VNET
$2.05B
| $41K | ﹤0.01% |
8,252
-2,532
| -23% | -$13.7K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.