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 | |
|---|---|---|---|---|---|---|
|
SPNC
501
DELISTED
Spectranetics Corp
SPNC
| $704K | 0.03% |
18,346
+3,729
| +26% | +$108K |
|
|
STZ.B
502
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $698K | 0.03% |
463
-376
| -45% | -$67.2K |
|
503
Cleveland-Cliffs
CLF
$5.39B
| $696K | 0.03% |
100,721
-29,779
| -23% | -$197K |
|
504
BBVA Argentina
BBAR
$4.26B
| $695K | 0.03% |
36,750
+26,131
| +246% | +$488K |
|
505
CALL
Costco
COST
$411B
| $695K | 0.03% |
3,590
+2,287
| +176% | +$394K |
|
|
QIWI
506
DELISTED
QIWI PLC
QIWI
| $695K | 0.03% |
28,197
+20,517
| +267% | +$430K |
|
507
CALL
Teva Pharmaceuticals
TEVA
$35.1B
| $691K | 0.03% |
4,620
+1,941
| +72% | +$60.1K |
|
508
CALL
International Paper
IP
$20.2B
| $686K | 0.03% |
1,918
+208
| +12% | +$10.5K |
|
509
CRA International
CRAI
$1.09B
| $683K | 0.03% |
18,827
+2,152
| +13% | +$76K |
|
510
FTAI Aviation
FTAI
$22.8B
| $682K | 0.03% |
50,131
+49,567
| +8,788% | +$661K |
|
511
PUT
Newmont
NEM
$102B
| $682K | 0.03% |
3,094
-2,100
| -40% | -$70.7K |
|
512
PUT
Applied Materials
AMAT
$440B
| $681K | 0.03% |
2,523
+2,153
| +582% | +$91.5K |
|
513
Golar LNG
GLNG
$5.06B
| $676K | 0.03% |
30,421
+17,555
| +136% | +$440K |
|
514
Adeia
ADEA
$3.01B
| $675K | 0.03% |
85,696
+54,897
| +178% | +$463K |
|
515
Sarepta Therapeutics
SRPT
$1.67B
| $675K | 0.03% |
20,040
-27,441
| -58% | -$893K |
|
516
CALL
ExxonMobil
XOM
$640B
| $670K | 0.03% |
6,402
+1,101
| +21% | +$90.1K |
|
|
TGP
517
DELISTED
Teekay LNG Partners L.P.
TGP
| $666K | 0.03% |
43,428
+9,749
| +29% | +$157K |
|
518
CALL
Zions Bancorporation
ZION
$10.3B
| $663K | 0.03% |
910
+65
| +8% | +$2.68K |
|
519
PUT
Capital One
COF
$124B
| $661K | 0.03% |
2,746
+2,062
| +301% | +$168K |
|
520
CALL
AbbVie
ABBV
$448B
| $659K | 0.03% |
2,060
-2,539
| -55% | -$171K |
|
521
PUT
General Mills
GIS
$19.7B
| $659K | 0.03% |
2,721
+810
| +42% | +$46.2K |
|
522
CALL
Lumentum
LITE
$64.6B
| $657K | 0.03% |
858
+440
| +105% | +$23.6K |
|
|
QCP
523
DELISTED
Quality Care Properties, Inc.
QCP
| $657K | 0.03% |
+35,916
| New | +$646K |
|
|
SHLD
524
PUT
DELISTED
Sears Holding Corporation
SHLD
| $654K | 0.03% |
3,429
+912
| +36% | +$8.52K |
|
525
Invesco CurrencyShares British Pound Sterling Trust
FXB
$77.2M
| $653K | 0.03% |
5,150
-1,050
| -17% | -$131K |
|
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.